Two pair - I do it with two couples.
I'm not fussy re. gender although they have to love cock
Just leave a white rock on your front door step... I've heard that's the secret signal!
3 of a kind? Does that mean 3 of the same gender? Not sure I'm into that. Though I'm happy to let others express themselves however they like...
It does imply that not that there's anything wrong with that
Don't judge meAlso, I don't even wanna know exactly what you "flush" people are into. Freaks.