My sister and I have a small-time webcomic called Bean at our website. She made a contest where there's four frames of two characters talking to each other, and you just fill in your own words. Though you probably don't know the comic, I think it's something that anyone can participate in, since it's all random humor anyway. If you're interested, check out this link:
I hope this isn't considered some kind of rude solicitation... I just thought it'd be fun.