he's probally Masterdumping that sick bastard
by West G. July 2, 2011
Get the MasterDumping mug.When you hump a pillow, bed, woman, etc., and you put your hand by your penis so that as you hump up and down, your hand rubs against your penis, giving you the sensation of masturbating while you are humping.
I was so horny after watching the shake-weight commercial that I decided to have a quick masturhumping session.
by Masturhumper December 29, 2010
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