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riding on a large penis- woman I once worked with informed me that she had been with a man with a large dick and the "girth" on it was massive. Definition of the word girth being the measurement of something from the middle.
Obviously she rode this as she was a total tramp. In addition to Beyonces " Drunk in Love" she rode on the 'girthboard'
by Backsteetbitch March 25, 2014
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