To extend user510's comment about using the first names: people who use the first name of their waiter are generally going to be the people who talk to your manager for the least issue. Having been a waiter in Western Europe myself, if someone I don't know were to call me by my first name, it would immediately put me on the defensive because of the likelihood that this person is going to take any less-than-perfect service as an offence. It's not a guarantee, but there is a general tendency. — Flater 2 mins ago

We implemented a similar feature into Monopoly. We made the banker an actual player, and made bank heists a feature - you can only pull it off if the banker doesn't notice you stealing (e.g. one player distracts the banker while the other loots the box). The banker was given executive power when catching thieves, foreclosing their houses or claiming their rent for the next few people that landed on their spaces. AS much I get get upset about cheating, I have to admit it was actually fun to play when everyone agreed on the added rules. — Flater 1 min ago

maybe I would consider also a "yeah. so?" in between the last two options. — Federico 40 secs ago

This answer is bizarre. OP was definitely in the wrong... it's not normal (it is, in fact, VERY weird) to call someone who you don't know "Uncle" in Germany. That seems to be an Indian English-only thing. — only_pro 1 min ago

I'd agree with having a manager talk to him because if this person has a history of groping when he's drunk, he's probably been told that this isn't ok, and he's still doing it. which means he needs someone with more authority telling him to knock it off. — DaveG 1 min ago

I think this is bad advice. It's a recipe for antagonising this colleague and perhaps others, when there's no reason to. — reinierpost 28 secs ago