George had been poised outside the door. Dodging between knocking, just going in, and announcing himself from the other side of the door. After the audible chuckle it was clear that the Maryanne wasn't asleep. He opted for just going in. After all she had either read something humorous, or was watching a bit of television on her computer.
George reasoned that she most likely would have headphones on, and likely wouldn't hear if he knocked, or announced himself. Boy, how wrong could he be. Pushing the door open, whatever he'd been about to ask left him for "OH MY GOD!" Shrieked instead.
"Mitchell, what the fuck are you doing?" Of course he mistook one for the other, after getting an eyeful of both his friends and turning his back to them.