Tribbing? Wtf! I thought I had a fairly broad knowledge of sexual terms but I'd never heard that one before. Def: Tribbing is the act of two women stimulating each other by rubbing their vaginas together in a sort of 'scissor' position, where their vaginas can directly touch each other. It is highly pleasurable and allows for clit-to-clit stimulation, usually resulting in exquisite pleasure for both women. I always called it scissors, but what they hell. So how about we swap around all the lines in the Christmas Carol the Twelve days of Christmas. So Two turles doves can go out the window to be replaced with "two girls a'tribbing" next?