An act of lesbianism in which one woman and another woman engage in clitoral stimulation by simultaneously rubbing each others' excited clitorises together. This is achieved when one woman lies on her side, lifting her leg up and the other woman spreads her own legs and interlocks herself with her partner in a "scissoring" position. Both women proceed to grind their clitorises together, thus producing sexual stimulation and satisfaction.
I was surprised to see tribation in last night's porno flick since tribation isn't a very common sexual act in porn.
by DoJo March 09, 2006