look up any word, like rockabilly girl:
 
1.
Doing base (rock cocaine)
Lucky: Have you been basing?
Angel: I haven't been doing shit!

- Poetic Justice
by Mojinski June 09, 2007
 
2.
To Hit Multiple Basses during one hook up session
Saltsy: "Hey I saw you and Juliet Hooking up last night"

Peppa: "Ya man we went home and started basing"
by Preston Keys December 28, 2010
 
3.
The act of a man performing a sexual action to a woman.
- Yesterday, I based my girlfriend all night long.

- We based on the backseat of my car.

- I'm basing Julie all the time.

- She asked me to base her.
by Rasputin da basemachine August 03, 2004