"This room is the event loop," he cuts you off. "Everything goes through here. Well, not everything. Deferreds don't, and some of the other utilities" he continues, grabbing your arm and pulling you through the room.

"De--whats?" you stammer. He stops walking and turns toward you.

"Deferreds. You know, like: 'I'm going to hit you'." He pauses.

"You're going to wh... OWW!" He slaps you hard across the face.

"Deferreds." He grabs your hand and starts walking briskly through the room again.