You were serving 2 algebraliens, Four and X. They're dating and X actually loves Four so much. They find him entertaining, handsome/pretty. They were so in love with him that they didn't notice a "redflag" about Four. And that is that his favorite movie was the human centipede..

X: what's your favorite film, Foury?

Four stands up and announces it.

Four: HUMAN CENTIPEDE ! !