Yeah, that’s another thing. This group is alcohol-free on game night, because of what you and others have said.
Anyway, I think I see what’s been happening. The people responding to this have been envisioning a scene where the final scores are announced, the check is presented, and Rilchiam brushes the check away and onto the floor, sniffing, “I’m not paying that because I am teh awesomeness.” No such thing. Not even anything analogous to that, and not even anything I would like to have done.
What I was mulling was the possibility of saying to the one guy, “You know, a while back, you said ‘I’ve got your share even if we don’t win,’ and we won anyway. And this time we didn’t win, and you didn’t have my share, so I was wondering what was up with that?” But I’m not even going to do that. I don’t like it when people say things like that and promptly forget, but they don’t like it any better when people call them on what they said. However, I didn’t put that in the OP, because I also don’t like it when people state a simple grievance, then follow with a backstory that begins, “I met this person in 1999…”
I don’t dispute that people would be grossly offended by a check-brushing attitude. But if it was a matter of talking to someone privately, afterwards, and just asking what was up, would that also mean banishment from the group amid howls of laughter? I hope people around here are not so thin-skinned themselves that no one can ever express doubt or dissatisfaction in their friendship without getting bitten and excommunicated on the spot.
(And FTR, I had much appreciation for the other right answers, and I made this known.)
ETA: Interrobang?!, I don’t think it is the same. If it was cash, for use anywhere, not just the bar, I probably would not hand it right back to the bar. I’d more likely spend it on a book or something.