Backpack (n.): Something that, when plopped on the ground, angers the administration.

Example:

Craig: Dude, I just left a backpack right in the middle of the cafeteria!

Henry: That’s so gross. I heard Ms. Galvin stepped on it!

Talking in the library (n.):

1. Something that’s not that big of a deal but you get in severe trouble for it anyways.

2. The only reason anyone ever gets a detention.

Example 1:

Guy A: Yo, can you go the party tonight?

Guy B: No, I have to go to a forced labor camp in Siberia for talking in the library.

Guy A: Oh, so you can’t drive me then?

Example 2:

Guy 1: I just killed a man.

Guy 2: Wow. I’m speechless. Did you get a detention?

Guy 1: Nah. They said that since I wasn’t talking in the library while killing him, they can’t give me a detention.

Guy 2: Stay away from me.