Tribadism (more commonly known as scissoring) is the act of sexual arousal by means of rubbing two vagina together.
Colloquialisms:
Common terms for this act are:
"Scissoring", "Pussy Locking", "The Twisted Sister", "Twisted Sisters", "Bumping Donuts", "Red Rubbing", "Clit-Clatting", "Rock, Paper, Vagina", "Twiztid Scissors", "Pocket Docket", "Smelly Time", "Mashing
Cookies", "Churning
Butter", "Bob Saget", "Muff Buffing", "Grinding
Beans", "Boiling Eggs", "Maynard Truman", "
Rose-Bud-Thud", "Ginger Smacking", "Cracker Barreling", "Sticky Sliding", "Cat Nipping", "Touching Tacos", "Position
7-B", "Clam Jousting", "Cardio Snuggling", and "Bumping Fur."