Rubbing somebody's toothbrush all over a woman's herp-ridden vagina, and then leaving it there for the owner of the toothbrush to brush their teeth with.

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.