Person 1: So there's this parasite that gets in crabs, and instead of them running and hiding from seagulls, it - I kid you not - this parasite makes the crabs dance! [Speaker demonstrates, waving both hands in the air, and rocking his body side-to-side.] And the gulls eat the crabs, and the parasite can get into a host higher up the food chain.
Person 2: That's the best argument against Intelligent Design that I've ever heard. If there's a Designer, he's really f***ed up.
I found it especially amusing that the first speaker would wave his arms and move around in his chair to demonstrate, but wouldn't get up. I guess it was a LAN party after all... :)