Last night on Letterman, Mary-Kate Olsen admitted that she went to high school with douchier all-star Spencer Pratt. While Dave tried to get her to say more, MK mostly revealed was that he had a bad temper on the soccer field. Today of course Spencer had a response all ready, "I don't really get why she'd use my name to get press for her little indie film that no one's going to see...She should probably focus more on not getting dressed in the dark than on me." He went on to call her a "troll" and the "less cute twin." Clearly, this is a feud for the ages — so whose side are you on?