1. a ridiculous amount of burgers to order at a fast food restaurant for under $20
(should not be done whilst among very good friends, OR by yourself
there is no easy way to order 17 mcdoubles)
2. the name for someone who happens to be one who orders 17 mcdoubles at a restaurant (alone or with friends, it's regardless)

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.