Someone who frequently massages, plays with, grabs, pinches any part of their behind for self-pleasure
butt holer massager, Assterbator
by Sasster2003 October 22, 2009
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Masturbating analy. Fingers or the daring fist(s). More unique rituals include feet and possibly penii (penis plural).

For more asstastic fun, see poopy chopsticks
"Oh man that assterbation was awesome."
"yea my foot is brown!"
by BobbyZ December 20, 2003
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The shameful process of grinding one's "derriere" into the groin area of their dance partner.
Mrs. Rode told us that if she sees any assterbation at the Christmas Dance, she's putting on her coat and leaving.
by ChrissyFanB1 December 5, 2009
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the practise of rubbing ones genitals while dancing.
Mrs. Rode said if she sees assterbation on the dance floor she will put on her jacket and leave
by Chrissy Rode December 5, 2009
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