Yeah, it's pretty shitty. Last time it happened to me a few friends wanted to go to this Irish pub, so I went up and was going to get a round for everyone. Nope. Bartender said I was drunk, tried to explain my stutter. Still wouldn't sell me booze. I told him to go fuck himself and we all left. Ran into some other friends, let them know about it. None of us will go back there.