That's some Down South shyt.
Not all bruhs, but generally speaking a lot of Southern dudes be on some saucy, twang, bubbly, etc type of demeanor.
When I say that, I don't mean necessarily on some gay shyt, but rather, certain things they do in terms of gestures, styles, etc aren't the most manly in theory.
It's one thing if this were just a bar, and your friend asks you what you're having, or you tell the bartender to give me what he's having, it'd be different, but inside a club isn't the same.
On the East Coast, speaking specifically on 'Cuse, I know for a fact if you ask or get asked by a man regarding drinks, it would definitely come off as suspect and a confrontation might pop off, y'know, a few words are said, a little push and shove, and maybe a fist gets swung.