A: Mother, may I go play outside? B: Have you cleaned your room yet? A: I promise I'll do it later. B: You said that yesterday. Go clean it now. A: I really mean it this time. I'll clean it later. B: Alright, go play for a bit. A: Before I go, may I have a cookie? B: You can have it later. A: But it's the last one- someone else might eat it. B: You can have it now if you go clean your room. A: I think I'd rather go out and play. B: Then I think I'll have the cookie for snack.