I'm getting wasted today at my friend's birthday party, I live in South America so technically I am American too, just not from the USA (get a name already).
And it's hard to call american way of life "culture" you know.
Technically yes. But in a way you are from your country. In a technical way I am a Texan (born in Texas). But we are just Americans and we like the USA as a name so nah.
I might get wasted. Have a brand new bottle of Vodka in my freezer. But it would probably take half the bottle or more as last time I drank 1/3 of the bottle and didn't even get touched.