just my unsolicited 2 cents... say it's a woman and don't overthink it so there's no existential crisis moment... and chalk it up as a W for getting some proper head. Because lots of bitches can't suck dick right.
Rule, if they know how to suck a mean dick, watch out, it is a coin toss whether it might be a guy. (I mean REALLY can suck a dick, like in this video).