Excluding movies based off of video games what is the worst movie that you have ever watched and why?

Jack *** is the most tasteless move and a total waste of the price of admission. It has scenes like a guy walking into a store and taking a dump in a model toilet in the middle of the store. But I saw one recently that was so bad that the acting was like a high school play or even a grade school Christmas play. I con't have the name on hand but I could get it. The plot was that this teen girl was challenged to have a horse race with a girl who was always the winner and the girl who was challenged had never been on a horse so this guy startes teaching her to ride and she never goes faster than a walk in the whole movie. The kids in the movies recite the lines in monotones like they are reading the no feeling no expression. This was worse than The Blair Witch Project or the Sharknado movies. I have it on a list on anohter computer if someone wants to torture themselves and watch it may if you took some LSD before watching it you might think it is great. 

Hard Target 2

Ballistic: Ecks vs. Sever

U.S. Seals

U.S. Seals 2

U.S. Seals: Dead Or Alive (aka Frogmen Operation Stormbringer)

TOWER of DEATH (aka GAME of DEATH II)

The True Game Of Death

Bruce Lee Fight Back From The Grave

Instead of answering the question, I will tell you the very best actionmovie I have ever seen, that ironically was also sort of like a video game- “Edge of Tomorrow”, with Tom Cruise and Emily Blunt. SEE IT! It got like 96% fresh on rotten tomatoes, huge sleeper blockbuster of epic proportions 

Ok worst one though, hmm... I honestly don’t watch many bad movies. I check ratings before I watch them so I’ve seen all the good ones. The new Mulan was pretty lame though? 

After Earth it was just boring and horrible acting.

"Alien from LA" is even worse than "Plan Nine from Outer Space".  "Alien from LA" is one version of "Journey to the Centre of the Earth" only this time it's Atlantis with skyscrapers, miners, hipsters, dune buggies, etc  It's your standard plot of  a daughter looking for her lost father.  She enters a tunnel falls and lands near some miners. One of the miners gives her a ride to Atlantis and all the while she is nattering on and on. Finally after entering the city her picture is posted on TV because she is an alien and aliens aren't welcome.  Now the plot centers on the miner trying to save her from the city leader.  Kathy Ireland plays the daughter and her voice is enough to drive anyone mad.  I have no idea of how this film ended because I switched to something else.  40 minutes of this film is all I could stomach.  If I wanted to torture someone I would have the person watch the entire film.  "Attack of the Killer Tomatoes" is Oscar material compared to this film. 

Pink Flamingos, read the plot and you might agree.

https://en.wikipedia.org/wiki/Pink_Flamingos#Plot