What's the worst movie you've ever seen?

Some disgusting late 2000s "rowdy comedy" that started with a scene of a girl giving the main character a blowjob in a school bathroom, except the scene started with a close up of the girl's mouth which had a big-ass pimple on it

I so fuckin furious I snapped the disc in half and delivered it back to the redbox like that, never had a film piss me off to that degree