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2.
The act of using a key to snort a drug. The drug is spooned onto the key and the placed near the nostril for inhalation.
"Let's go keybump in the bathroom."
by Fred Chang April 07, 2006
 
1.
The act of using a key to snort a drug. The drug is spooned onto the key and the placed near the nostril for inhalation.
"Hey, Lohan is inviting us to go do a key bump with her in the john."
by Revanche June 20, 2006
 
3.
What you get when your homies are stingy with the bag.

Hitter: "Yo, lay me out a phatty."

Pitcher: "Nah man, I'm just doing key bumps."
by shimmy shimmy coco pop August 21, 2007