When a man's two testicle collide within the scrotum resulting in a painful feeling. Much like that desk toy with the swinging balls.

Referring to women who are sexually or romantically attracted to other women. Applies to both lesbians and bisexual women, as it is only the same-sex attraction that matters, not any other attractions the women may have.

Originates from the Greek poet Sappho, a bisexual woman from the Isle of Lesbos, from which we get the term lesbian.

When you are at a sauna after working out and you are naked and start rocking hips side to side as to hit their balls together.

When guys scissor and their balls smash together