stay-cup
Opposite of a go-cup. A cup that is typically quite large, e.g. 32 oz. plus in volume and filled with booze which is used to discourage someone from leaving.
Amy: Drew has been drinking all day, and has maintained a nice buzz through the day.
Lisa: Ya, we went to breakfast and he started with bloody's at Maudie's and then I went boot shopping with the girls and Drew went over to watch the game with his college buddies. Apparently, he was going to leave at half-time, though they served him a screwdriver stay-cup, so he lasted to the end of the game. Ubered over with his go-cup. And here we are.
Lisa: Ya, we went to breakfast and he started with bloody's at Maudie's and then I went boot shopping with the girls and Drew went over to watch the game with his college buddies. Apparently, he was going to leave at half-time, though they served him a screwdriver stay-cup, so he lasted to the end of the game. Ubered over with his go-cup. And here we are.