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.

being on the same level

What gay people do when having anal sex as the assholes meet together

Going "Eye To Eye" with someone is the act of two or more people spreading the cheeks of their butts and rubbing their anus' together causing rectal friction.