The Drunk Hungarian

Last night we went to eCiti with a friend from work and my sister-in-law. eCiti is a fairly upscale bar in the Tyson's Corner. We ate dinner, and moved over to the bar section, where they have a large dance floor, a sushi bar and a few tables around to sit at.
Since John is a smoker, he was being considerate and stood up on the dance floor a few feet away to smoke a cigarette. As he was smoking, we noticed that he was chatting with a man. After a few minutes, I caught John's eye and motioned him over so that we could meet his friend, and John made a quick simple introduction to Tibor, from Hungary. Completing the introductions, Tibor leaned into me and confessed, "I'm a little drunk! I've been having some troubles at home, so I've been drinking."
Ok, no harm, buddy...and that explains your complete lack of personal space at the moment. So, on to the first question. So, where do you know John from? "Oh, I just met him now."
Great, John has just sloughed off a friendly drunk on me, and he's not making any sign of leaving. Instead, he's reaching for John's chair. And to think, I even introduced him to my wife and sister, so he probably feels welcome. "Oh, may I use this chair?"
Alas, a way to hand him back off! I point at John. "It's his chair, so you'll have to ask him", I say, and grin at John.
Thankfully, the drunk leaves, not realizing that he could have pulled up another chair, if he wanted to sit at the table and talk. We all laughed a bit about the Hungarian drunk, who had confided that he came here to this country 5 years ago, and learned English by watching television.
A bit later, Tibor comes back to the table. We're all wondering what he could want, and he begins to tell us about the free buffet upstairs. "They have pasta and chicken 'something', I forgot the name, but it is good. You should try some out. It's right up there", he says, pointing at the steps upstairs.
While hesitant about Tibor's overly friendly attitude, I am a little irritated that I may have just spent $70 on dinner unnecessarily. As he walks away, I begin discussing that with my wife and glance over to the stairs. A large sign says "Private Party" at the base of the stairs, and we all burst out laughing again at Tibor, apparent drunk wedding crasher from Hungary...