"You got called Sir!"

So, I work at McDonald's, and get misgendered a lot, though it's only by the customers, but my coworkers are cool af. Anyway I do a lot of presenting (basically calling out numbers and giving food) so I have a lot of people contact. And the other day, I saw a trans dude, and I made sure to call him 'Sir' after I gave him his food, and he walked away with the biggest smile and his friend elbowed him and was like "You got called Sir! See?" So that was cool, because I could make someone happy