Even if Former Teacher likes to get sloshed then good for him.

Piss pots are often great fun to be with.

Yep, I think that's true.

Laowai in China are usually hilarious when they are pissed, but there are some drunken laowai who will start to fight over a minor disagreement during a conversation with laowai they happen to meet in public bars/KTV joints. Be on your guard in such places if other laowai you don't know well are on the premises too and inebriated to some extent!