помогите привести несколько примеров плохих манер на английском. Например, в Британии неприлично спрашивать сколько зарабатывает твой собеседник. А что можно сказать относительно России/Украины?

It's a bad idea to take off your shoes entering an American/British house.

In Russia it's not right to discuss anybody not seeing the person.

In America you will be thought a really ill-mannered person if you are late.

In America It's the right thing to say "Hi" to any familiar person every time you meet during a day.