Spencer Pratt was on Letterman on Friday, and Heidi waited from the green room. Watch as David Letterman’s grasp on the world he lives in slips momentarily, but DON’T WORRY, he recovers it, and then he makes with the busting of the snaps up in the clown-faces.

Apparently Heidi enjoyed the complimentary airplane glue in the Late Show green room. If I was David Letterman and she said “you’ve got to step your game up” to me, I would have stepped my game up right then and there by stomping the yard on her head. I would have DRUMLINED on her stupid face. This isn’t what Dave signed up for.