Oh, licking envelopes can be fun. All you have to do is make a game of it.

Principal Skinner: Don't worry, Bart. We'll find something fun for you to do. Ahh, here we are. Here's a whole box of unsealed envelopes for the P.T.A.

Bart: You're making me lick envelopes?

Principal Skinner: Oh, licking envelopes can be fun. All you have to do is make a game of it.

Bart: What kind of game?

Principal Skinner: Well, for example, you could see how many you can lick in an hour. And then try to break that record.

Bart: Sounds like a pretty crappy game to me.

Principal Skinner: Yes, well, get started.