My favorite sleazy poll asked about "homosexual encounters" to determine the percentage of active homosexuals. They listed examples of homosexual encounters, including a same-sex person making unwanted sexual advances. Rather clever actually - dishonest but clever. They hit close to 5% of the population as actively homosexual, and I suspect the true number would have been higher if people had responded honestly.
So, effectively, if a gay’s Gaydar is off, both of the people in the encounter are considered gay...