MikeH

Question: One thing doesn't make sense about the line-up: Benicio del Toro spoke that way for the entire movie. So what did he do in the line-up that was funny?

MikeH

Answer: Basically, the actors were improvising their answers, and their inflection, and kept trying to make each other laugh. Director Bryan Singer was angry at first, but eventually decided it fit their characters and their disregard/disdain for authority, and so used the takes in which they were cracking up. In this particular moment, they were laughing at the beginning of del Toro's part because, apparently, he had just broken wind.