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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When you give your girlfriend burritos with laxitives in them and when your fucking her and she starts to shit on your dick whilst havin..