Do you act like it bothers you when they tease you about it? Cause if you do, then they just do it to get your all worked up. but if you don't let it get to you, they'd probably stop doing it.

Sit your cousin down and tell him that you were drinking. And as IF he's never done something stupid himself while drunk. And if he can't get over it, that's his problem. Just don't show that it bothers you. Laugh it off and call yourself stupid and immature. Then hopefully they're drop it.

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