Though we're sure Mary-Kate and Dave, evoking more chemistry as a comedy duo than Dave and Paul ever have, planned the awkward set-up in advance, Letterman's inquiry into Mary-Kate's famous high-school buddies not-so-surprisingly led to Olsen spilling the beans on Pratt's notorious "temper" while playing for her school's soccer team. According to MK, Pratt would get in violent fights with the coach and walk off the field in huffs regularly. Dave excitedly jumps in with a series of convoluted and delightful questions like, "How does someone his age get to be so oily?" and "Isn't he wormy?" Olsen, just on the verge of participating in the rant, impressively takes the high road by successfully pulling off a (funny!) non sequitur into promoting her film. Her old lady posture aside, Olsen has officially unveilied her A-game these last few weeks. If only she would come back to Weeds and save the Botwins from Mexico captivity by distracting the border guards with her hypnotizing laughing shoulder heaves, we might even throw a few buckets of red paint at PETA members in her honor.
Defamer
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![Mary-Kate Olsen Joins David Letterman In Taking Down Spencer Pratt One 'Oily' Insult At A Time [Pratt Attack]](http://cm1.theinsider.com/media/0/82/59/mkdave_def.flv.0.0.0x0.358x268.jpeg)




Rumors are swirling that Heidi Montag and Spencer Pratt's marriage isn't legal. Thoughts?
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