Whats the best excuse that i can use to get out of work tomorrow morning so i can sell my car?

One of the best real excuses to miss work, though in my opinion overused:

I have diarrhea, or just come out and say the runs. Who is going to take a chance on this? It's no fail for at least one go.

To pull off real excuses to miss work you have to sound genuine

You can't say I'm having gastrointestinal problems. Well, obviously you can but who talks like that? Your boss is going to think you've got the latest medical journal open in front of you. Just talk like you normally would.

"I have the worst gut ache in history. I'm pretty sure my colon left with that last bout in the john. I'd liked to talk more but, really, I got to run."

Another gem from my real excuses to miss work is the old standby

I have a migraine. Usually folks think ladies get migraines, but men get them too. Bosses just don't seem to believe men, it's the old 'suck it up buddy we all get headaches' prejudice, men have to bear.

What you can try is a sinus headache. Sinus headaches are backed up snot, who wants to get into that? They are also murderous, they can be good for more than 2 days if anyone has a clue about headaches.

If your boss seems to be hedging on letting you go, you have to know what you're ailment is all about in order to make real excuses to miss work actually work.

Start explaining the symptoms. For a sinus headache try "There's a bearing pressure like something is expanding and pushing against my eyeballs, trying to pop them out of their sockets."

Tell him you tried to blow your nose to clear it, but it feels like there's little explosions going off inside your brain. Don't forget to make that harking sound people with blocked noses make, like they think they can clear it from the inside. It will almost guarantee a quick hang up.

family emergency

you got shot

your car died

you have a hangover

you're sick

you fell and broke your ankle

traffic

your driveway crumbled away in a flash flood

you had to ride a horse to work

you are selling your car to some lady

your washing machine broke and flooded the house (has worked in the past)

your dog died

you saved somebody's life

tell them you will be late trying to find someone to come and take you to work that someone flattened all your tires worked for me in the past

How about the truth? You shouldn't need to lie.