Amy: Plus, Sheldon's freaking out 'cause we got in trouble.
Leonard: Well, I've got him distracted for a while.
Penny: Doesn't he know how to solve those?
Leonard: Normally, yes, but I switched the stickers around, so I don't even think it's possible to solve-
Sheldon: Solved it.
Leonard: What? No, you didn't.
Sheldon: Not the cube, but the puzzle of why I couldn't solve the cube. Solution: you switched stickers 2, 9, 32, and 51.
Penny: Really? This thing has numbers?
Sheldon: Anything has a number if you assign it a number, friend number four.
Leonard: Top five, not bad.