I am asking if the sentence  "'I cannot watch for ten minutes" is ambiguous and if so what is the ambiguity?

Deal with the troll before it's too late. Every question in th.answers.yahoo.com has tons of blank answers (using space bar); it could have been posted by someone like Shadowfire to gain points for his troll accounts. In his questions and answers he always refers to Christian Lord God as “lord” / “god”; basically, when using proper grammar throughout his hateful blasphemous speech, he deliberately writes these two words from lower case letter. Jewish user Shadowfire (who spams this link “deathmetal.org/news/christ-sodomized” and has been on Yahoo Answers since the beginning and could possibly be the infamous homosexual flying antichrist from the tribe of Dan) from Portland [or so he claims because he could’ve been born in Russia in Valday (Russian: Валда́й) to a 12th generation Jewish prostitute who pretends to be a virgin)] has many trolls accounts on Yahoo Answers. These could be his accounts: Blackthorne1979, James Blackthorne, ✟ summer of night omega crow † ⚔, Saint James Tiberius Troll, Lord Shadowfire, Carter Berg, Madam Sin Bin, Fireball, Aravah, Miguel, ThatToiletguy, Tublet Huglet, Tut Uncommon: 3peat Offender, Cult Free, Reynaldo Weeks, Juli, Petri Lindroos, Uncle Fester, Lord Ninigi, Knightwulf, Nonplussed, Nightwulf, lyconpolis (lycon = wolf), Derick Fields, Toilet John, Hitler Was Right About The Jews, Master Debator, Magistra, Desiree, D-girl, Firecock, Yahoo User, Corvus Blackthorne, Patrick McCluskey,  Lord Aizen, Torchbug, Arni, r.wolfpaw, No Bozos, Fuzzface McGee, First Dragon, L.E. Gant, Fullofpoop, Shadowfire the Sarcastic, Pope of Atheist God, Jimson C. Raskin,  

A yellow face with simple open eyes showing clenched teeth,

El Nerdo Loco, megalomaniac, Corvia Blackthorne, Shadowfire Lives, Shadowfire Lives bytches, The Chick that wears Doc Martens, Homo, Wotan 8, Wotan (who keeps posting “satanisgod.org”), Heidi Ho, Clo Bird, Angels with Silver Wings, Orange I'lluminaughty, Christian Sinner, Gandalf the black, The Lord Hummungus, Mismatched Tube Socks, Pearl, Partysnax the Dragon, etc. and any other anonymous accounts. With one his accounts Fireball, he pretends to be a Methodist old lady who posts short-hand slang TIRH (this is religion here). He reports all answers and questions that he doesn't like just so that his questions stay on top in the Religion and Spirituality section. He trolls in other categories too. It gives Christians a bad name (just because of this troll's sock puppet account). His Toilet John account keeps posting questions where Jesus was sodomized by Roman soldiers. Remember the prophecy where it says that the antichrist will have personal hatred towards the real Jesus Christ. That’s why Shadowfire keeps posting thousands of similar questions along the line: “Did Romans sodomize Jesus?” or “Was Jesus anally violated during the crucifixion?” or "How many liters of cûm did Jesus swallow before being hanged on the cross to die?" or "Did Jesus take a big dick up the butt beforr dying?" or "Did Roman buttfck Jesus before crucifying him?" or “Did Romans buttrape Jesus?” or “Did Jesus spend his final hours feasting on Roman feces, sucking Roman cocks, and juggling one erect dick after another up his butt?

“ or “Is it true the Romans relentlessly sodomized Jesus, came all over his face, shat in his throat, pissed in his anus, & left him dripping wet?

“. He asks multiple idiotic mundane questions like “Is Hinduism true?”, “What makes a girl harden?” [like he enjoyed killing little girls], etc. and answers them with his sock puppet accounts just to gain points. Some questions you can see that he answered with like five or seven accounts (especially the ones about himself that he reports right away). With his Reynaldo Weeks account he boasts that he was the reason why their accounts were suspended. With his Magistra account he threatens people with clowns and CIA assassins. Shadowfire mocks Christians with his sock puppet account Fireball in the Religion and Spirituality section by answering very destructively and adding "TIRH here" or reported (anonymously) or “fck you nigers”. He gives Christians a bad name because he promotes sins like sodomy, fornication, ecumenism, astrology (horoscopes), etc. He should be executed and burned at the stake for blasphemy. He spreads rapture heresy, reincarnation heresy, ecumenism heresy, etc. and many more subtle heresies. Antichrist will ride on a donkey into the 3rd Temple. Stop him before it’s too late. Antichrist is gay flying wizard who was born from a prostitute and who will ride on a donkey into the 3rd Temple. Antichrist's mother is a 12th generation prostitute (according to saint Lavrentiy of Chernigov). According to researcher Grigoriy Klimov, prostitutes = lesbians = witches; so, antichrist's mother is a witch, a lesbian, and a prostitute. Hide your kids, hide your wife ‘cuz de evil antichrist is flying thru town; take your glocks out and shoot dat son of a bytch down! Again, he’s an s-o-b ‘cuz his mother is a prostitute to Jews and Hindus. Funny thing is that she pretends to be a virgin. Don’t be deceived by this skumbag and his fake miracles trying to emulate Christ’s miracles! If wrongfully accused, forgive me; state under your account that you are not Corvus Blackthorne then. Shadowfire claims to be extraterrestrial raven when demons pretend to be extraterrestrials. I’m paranoid and think that all Yahoo accounts that talk about ravens are about him. Please, help me; I beg you. Using user Miguel, he’s teaching people how to summon demons. Dirty, very dirty! Shadowfire is a true dirtbag; do something to stop him now; he’s only one user and he’s doing the harm like it’s hundreds of users.

It means either you have to wait ten minutes before watching, or you can't stand to watch for the tenth of ten minutes.

You cannot watch "what" for ten minutes. Do you mean "this" which would imply you have time to watch something else but for one reason or another you cannot watch a certain subject that is currently being presented to you or whatever "this" is.

Or:

You cannot watch "anything" for ten minutes which implies that you could watch "this" or "something else" but only after ten minutes have passed. Presumably to use restroom facilities or finish a certain task.

Or: You cannot watch for ten minutes because it is something that disgusts you and you know it is even longer than ten minutes, perhaps a very bad movie.

The sentence is ambiguous because it implies different things with the same words leaving the listener or reader unable to determine your intent.

It is a prefect sentence for a politician.

The ambiguity is this. Does it mean that you cannot watch until ten minutes from now or that you can watch, but not for a period as long as ten minutes?

It doesn't fit the true definition of ambiguous in that there is no choice that could otherwise be made if the sentence were clearer, but it definitely lacks clarity. You need to say what it is that you cannot watch.

It does not say if you are unable to watch for as much of ten minutes or if you cannot stand it to watch for ten minutes.  The ambiguity lies in the meaning of "cannot". Do you mean incapable of doing it for some reason (I have to leave in five minutes so cannot watch for ten even if I wanted to), or do you mean that you are not capable of withstanding the pain or discomfort that watching would cause to you?

Almost the same things, but not really.  I'd love to watch the next ten minutes but can't is a lot different from I have time to watch but I hate the show so much that i can't make it ten minutes before I must leave from disgust..  Yet both meaning can be expressed by the identical sentence: "I can't watch for ten minutes".

EDIT ROFL, I never even saw the most obvious "i cannot watch it because it is not on for ten minutes" meaning.  So three possible meanings, not just two.

I'm desperate for the big game to start. It doesn't start for 10 more minutes. I can't watch it for ten minutes. (I have to wait 10 minutes.)

This show is awful. It will be over in 10 minutes, but I can't watch it for 10 more minutes. (I want to stop watching it now).

That's why it's ambiguous.

Consider "I can't talk on the phone for 10 minutes."

I have to wait 10 minutes before I call you because I'm in a meeting that won't end for 10 minutes.

I can't talk to you for 10 minutes because my phone battery is almost dead. 

It doesn't seem ambiguous to me.

Bashir, there are a few ways this is unclear.

The obvious one is that we cannot tell what it is you cannot watch. Television? Someone being beaten? A slow reading on camera of something hugely boring?

The other ambiguity is that "for ten minutes" could have two meanings. One means that you cannot watch something for as long as ten minutes, that your endurance for it is less than that amount of time. Or it could mean that for the next ten minutes you are not available to watch it, that you are busy with something else that will conclude in ten minutes.

Example: I cannot watch "Seinfeld" reruns for ten minutes.

Do you dislike the show so much that ten minutes is torture, or are you busy and will watch it ten minutes from now? It could mean either one.

No.

Sounds straight forward to me. Though the sentence doesn't say what it is that you can't watch. The sentence itself is clear.