-Yes?

-Where are my clothes?

*Knock-knock-knock!* Sheldon? *Knock-knock-knock!* Sheldon? *Knock-knock-knock!* Sheldon?

-I bet that started off as a joke...

...but by the third one, you realized there was something strangely enjoyable about it.

-Yeah, I kinda wanna do it again...

-I don't recommend it; you'll be doing it the rest of your life.