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4. Keefer
A really cool black person.
yo Samuel L Jackson is a straight up Keefer!
1. keefer
Keefer is an adjective denoting high-quality. It is frequently used to decribe marijuana but can be used in other contexts as well.
Hey man, this weed is totally keefer.

Yo Caretto, that movie was pretty keefer.
2. Keefer
A man/boy immersed in the party/drinking/weed-smoking atmosphere of highschool or college life who attends all of the parties and yet never touches any sort of drug, be it alcohol, weed, pills, etc.
-Joe! Quit being such a Keefer and take a hit off of this steamroller!

-Hey Keefer grow a pair and keg stand this shit!
3. Keefer
A guy who will flirt with anything with a vagina, but who will never make any effort to have more of a relationship than that.
1: Have you talked to that guy over there?

2: Yea, but he's a total keefer.
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