Many waitresses can be quickly won over by a compliment. “I love your earrings” will garner you extra mayo. “Great nail polish” gets your water glass consistently refilled.
The same does not appear to hold true for male servers. I pointed out to today’s barrista that his Bret-esque jumper was truly kickass, but I still got a cafe au lait with almost no foam. Who do you have to compliment around here?