He only looks cherubic.

Calvin: Dad, did you know there are people who can't read a clock?

David: Yes, I am aware of this fact.

C: Some of the kids in my class can't read the clock in our room. One kid who sits next to me is always asking me the time. "What time is it? Is it time for recess? When's lunch? " It gets pretty annoying.

D: So what do you do?

C: Well, I tell them the time, but I don't give them the right time.

D: What?

C: Yeah. If they say, "What time is it? Is lunch soon?" I'll look at the clock. It may be only 20 minutes away, but I will tell them it's not for two hours. Then they say, "Oh, man," and look really disappointed.

D: If you want them to stop asking you the time, why wouldn't you just teach them how to read a clock?

C: Because this is much more fun.