When I served in the navy there was this gay guy in our unit. One time all the recruits went into town to have a good time. There were also a few girls in our unit.
So the gay guy was talking to another guy in our unit(who was straight), with the intent of getting in his pants. While this was happening one of the girls walked up and tried to talk to the guy as well. Then suddenly the gay guy pushed the girl away physically and continued talking to the other guy like nothing happened.
It was kind of hilarious, but I guess you would have to witness it to really see the humour.