I live in a tolerant area and pass fairly well with a mask on, and we have other trans folks in town, so at worst most people don't make any issue of it.
One does get a certain number of sour faces, though, and every once in a while some character will heavily and obnoxiously emphasize "Sir."
Eh. White male privilege is great, and if they think I'm some fiftysomething white guy playing dress-up, they pretty much have to go along with it. Tough nuts for them.
So sour faces or or "sirs," I give them a big ol' grin and carry on like I don't care. Maybe they can't see my mouth, but they can see it in my lovely eyes, and their seeing me happy and themselves irrelevant is (imo) the best retort of all.