Is it common to get very drunk when you're overjoyed?

Yesterday was my mother's cousin's b-day. It was a large family reunion. Now I'm only 11 days from the major event (first time for me) of my life. They're all invited too. I'll have a new last name soon.

I drank 6-7 glasses of whiskey with Guarana; an orange soda. At some point the effect took over, I was given water and I still don't remember eating my portion of the birthday cake. It was chocolate, my favorite and I don't remember it. There are small parts of conversations I can't remember either.

So yeah in the middle of these happy conversations, the birthday celebration and at the same time all of them congratulating me too, I got very drunk. Is this common when you're on cloud 9?

Is it common to get very drunk when you're overjoyed?
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