Laughed my @$$ off... (SPOILERS)
At the beginning of the movie, the couple having sex, for some reason I just laughed myself silly when I saw the guy's long hair. I can't explain it was just so stupid.
Also, probably the funniest scene in the movie, when the Breeder kills Jenna's character Jenny and cuts into her, he pulls out her breast implant. He's takes a bite, but spits it out. Hilarious.