Top Definition
Also known as the Shakeweight, which helps one build muscles by shaking the dumbell-shaped device. Masturbweight helps one develop the muscles needed for masturbation of one's self or another.
Dude, I just bought the Masturbweight, so in just six minutes a day, I'll be increasing my ability for self-pleasure ten-fold.
by M&Jsandwich March 03, 2011
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