1) To casually reach under the covers while your wife is asleep and touch her vagina to see if there is any chance that you may get lucky before you get up.

2) To knowingly come from behind and surprise your wife by immediately touching her vagina when she least expects it when she is bent over in front of you (in the shower shaving her legs, putting on underwear, etc.)

3) To sneak a quick touch of your wife's vagina when in public every chance you get.
Grab Vagin (verb):

Hill: How in the world am I supposed to get anything done when you keep Grab Vaggin me
Eric: Well you have the funnest toy in the world, its so smooth...I want to touch it all day long
Hill: That's why I married you!
by Aquila117 April 7, 2015
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