Thomos: Hey, I want to go to the Boy's Room.
Do you want to go with me?
Steven; Oh, really? Then, do you want No. 1 or No. 2?
Thomos: I guess No. 1 will do.
Steven: Hmm, that's quick. OK. Let's go!
對話中的No. 1指的是 (1)一號房 (2)一號餐 (3)小便