Here's a video of some guys yukking it up (literally) (nyuk nyuk nyuk) at the Comedy Barn in Pigeon Forge, Tennessee a few months ago. You might want to let it play to the end. Keep tissues handy; your eyes will probably be watering by then.
And here's a video of a girl watching that video.
Hee hee!! I wonder if she has a boyfriend, and if he's deaf.