What is Keepin It Wet?
1.
Dating a girl just to have sex. 'It' refers to a penis.
Example 1:
Laura: You and Pam are getting pretty serious, is she girlfriend material?
Joe: No, I'm just keepin it wet.
Example 2:
Mike: I heard you have two girlfriends now?
George: No, I have one girlfriend and one keepin it wet girl.
See
Random Words:
1.
Similar to introducing, but generally being introduced to someone you find sexually attractive.
Guy to another guy: "I would like ..