In college, on a particularly stupid day, we decided we'd seen and heckled plenty of awful movies. So why not rent the most famous flop of all time? Yeah, that's the ticket! We'll rent a bad movie on purpose just for the fun of heckling it!
....Can anybody guess which famous flop I'm talking about? Lots of money spent on producing it, real name actors....
Well it was so bad, not only couldn't we heckle it, but we couldn't take more than 1/2 hour of it before turning it off and staring at the blank screen with slack jaws and a bad movie hangover.
The movie was Ishtar. It was and still is the worst movie ever made.