Mary Kate Agrees With Letterman

We all know that Spencer Pratt hardly has a fan in David Letterman, but it turns out Mary Kate Olsen is not exactly on Team Spencer either!

MK hit the Late Show with David Letterman yesterday, and when the conversation naturally turned to "The Hills -- as it always does -- Dave posed the question, "Don't you think [Spencer]'s a little wormy?"

To which MK responded: "Yeah! He used to play on the soccer team for my high school. And he does not have a good temper. He walked out of a few games. He would walk off the field, he was like, 'Me or the coach!"

She said that she wasn't friends with Spence back in the day. "Oh my God, that brings up stories." But she declined to share any, instead noting that "'The Wackness' is a great film."

MK also talked about her guest gig on "Samantha Who" (it's "been good," FYI) and working with Sir Ben Kingsley in "the Wackness."

She and Ben got very friendly on the set, she said. They had to -- they "make out," in the film. "We did a lot of talking." Uh huh. To which Dave gleefully announced, "You kissed a really old guy! He's like my age, right?" And MK said, yup, "Gandhi."

Anyway, considering the mess some her fellow young ingenues have been in lately, Dave asked what advice she would give them. MK's counsel? "Wear underwear."

Good advice, if we do say so ourselves.

Do you think Spencer's wormy?