Top Definition
1. Nickname for Advil. Pain = sad, Advil = Happy.

2. Unit of measurement to measure happiness.
1. What are you doing here? Didn't that girl's boyfriend bash your head in like two hours ago?

I'm good, took a handful of happions, can't feel a thing...

2. How's the new skatepark?

Pretty good, 4 out of 5 happions, prolly woulda got a perfect score if I didn't fall so much cuz I'm not really good at skateboarding...
by spuncer March 29, 2010
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