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verb.

i) slang for reverse cowgirl *with a twist*

ii) When a a woman is performing the reverse cowgirl on an obese or largely bellied (see also; beer belly) man and uses the elasticity of the man's stomach to assist the bouncing motion like when sitting on a medicine ball.
I was medicine balling austin so hard last night, my abs are rock hard now
by TFKbaby January 07, 2019
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2
The act of injecting your nutsack with saline until it is the size of a soccer ball.
After Medicine Balling, Matt likes to ride the subway and stand ackwardly close to people sitting down so it in their face.
by Kellori March 04, 2010
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