You may remember how Kick-Ass became famous for a fight in a parking lot. The scene is in the movie, and it was in the comic before that. But here's the same thing happening in real life:
Okay, okay, it's not quite "real" life - it's live-action, but it was shot as a viral advertisement for the comic. You probably don't want to go look at the comments because 1) there's never been a YouTube comment section that was ever worth reading, and B) the comments are split between "OMG this is such a ripoff of the movie!!!1!" and "was the scene in the comic inspired by this?" People are dumb...