You were fast asleep, when you hear ghost sounds. It's Alvin, Simon, and Theodore trying to be ghosts to scare you, but they stumbled around because they can't see a thing under the blue sheet. Alvin: "Booooooooooooo. Ow! Theodore that's my foot." Theodore: "Oh sorry Alvin. Booooooooo -ouch! Simon that's my hip." Simon: "Sorry, I can't see a thing under here."