That thing has never happened to me, but strangers have been rude af towards me and a partner before. Like one time a drunk guy outside a show said, "I don't know which of you dudes is uglier" (while his buddies validated him sniggering) to me and my wife. We were trying to get out of the building, and we were in this cluster of people so we were just kept moving. Not much else to do imo, engaging with those people prolongs the interactions and makes it stick in your head longer. If someone is looking to start shit with queer people I'm not going to oblige them. Same deal here, I'd likely just ignore them.