4. Inviting that Orientation Week friend home for Thanksgiving - When you’re young, three months might seem like a long time to have known a person. The truth is, you don’t really know someone until they have had the opportunity to make a complete and total fool of themselves in front of your family. It doesn’t matter if it’s making eyes at your younger sister, insulting your racist uncle who definitely had it coming but agreed to drive you back to school, or leaving your toilet with the tricky handle in such an unpleasant state that it reduced your mother, who once worked in an emergency room, to tears, your guest will do something to ruin the holiday. Something no one in your family will ever forget or let you live down, even after the friendship is terminated.
(Source: College Humor)