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1. wallin'
going crazy: over-reacting about something.
Boy you must be wallin' if you think that I'm gonna do that for you.
by January Dec 16, 2003 add a video
2. Wallin'
Used to describe a person/s who are acting crazy, reckless, ridiculous, etc.
-Pronounce: Wah-Lin
Dude 1: Yo what did your friends do at that party last night?

Dud 2: It was crazy! They destroyed everything!

Dude 1: Wow, your friends be wallin'.
3. wallin'
When a student attempts to hide either an object or an action from a teacher during class, usually but not limited to using a notebook or binder to block the view.
Mr. D caught Pedro wallin' while he was explaining adjectives, so he made Pedro put his binder away.
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