You think someone coarser than you is "crude", and someone higher class than you to be "putting on airs".

I am fed up with his vulgar jokes.

We had to put up with Kunio's poor table manners because he refused to change.

He uses foul language whenever he gets angry.

His dirty words can't bear repeating.

He haunts the lowest resorts.

I don't like dirty jokes, but I get a kick out of it when you tell them.

Don't talk about such vulgar topics in bad taste.

Shut your filthy mouth.

Those who use forks or chopsticks often think people who don't are uncivilized.