Up_Shut's the best.
OK, I have a couple new ones.
First off, if you're going to be a guy in porno, and you sound like Gollum, you shouldn't fucking speak AT ALL. Fucking creepy as all hell to hear Gollum talking dirty. And I mean this guy fucking sounds like Gollum.
I also saw something, where everyone was supposed to be Scottish. Two guys in kilts and shit, and a girl in... err, Scottish clothes? And they'd say "Aye" over and over during all the sex. And there were times where they couldn't keep up the fake accents, or keep a straight face. It was funny and stupid, but still weird.