Tribbing

[Sarah]

when lesibans rub their vaginas together in a humping motion. usually works better when they are both shaved.

[Britney]

When two women engage in lesbian sex and rub their genitals together for sexual gratification.

[Sarah]

From tribadism which refers to lesbianism. Derived from the Greek tribas (a lesbian) and tribo which is the verb to rub.
Refers to scissoring which is when two women rub their vulvas and clitoris together as a form of non-penetrative sex. Can also refer to frottage (rubbing) of the womans vulva against something for sexual stimulation.
Not specific to humans, this behaviour is also observed in nature. In particular bonobo monkeys, where female to female genital rubbing is common (about once every two hours).

[Mark Zuckerberg]

See [tribadism]

[Tanya Shivari]

A form of cockblocking. Unintentionally hitting on your friends to-be girlfriend.

[Couch Potatoe]

See [tribadism]