What is Tribianism?
1.
(noun) The act of female/female sexual congress where the two sets of vulvae are rubbed together stimulating the sensitive perineum, pair of labia minora, and
The two lustful women writhed in the throes of tribianism as their eager partners watched with mounting temptation.
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1.
When engaging in anal sex and you take your thang out of your girl's butt and draw a charicature on her ass with it, this is known ..