what is the definition and characteristic of offensive slang? when do we use it?

问题描述:

what is the definition and characteristic of offensive slang? when do we use it?
请英文写一下.

Offensive slang words should be used with care.Although they are not particularly "hot",they can be offensive to the person they are applied to.For example,if you call somebody an "airhead",that person could be insulted although anybody listening would not be shocked.Vulgar slang words should be used with extreme care.In general we recommend that non-native speakers do not use this language.