When the driver in front of you flips his or her blinker on at the last possible second causing you to slam on the brakes.

Or

When he or she engages the blinker too early and drive past multiple turn options.

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.