A bouncer! The bouncer is actually a name that, I guess it's called a colloquialism.

保镖！我想，保镖是口语的说法。

Also you can use colloquialisms, any idioms.

你还可以使用俗语，任何习语。

So if you say 'laters', it's a kind of modern colloquialism in a way.

在某种程度上，laters--再见，是个现代口语。

They use so many colloquialisms, they're not very polite and sometimes there seems to be no order in their discussion.

他们用很多的口语，他们不是很有礼貌，有时他们的讨论似乎没有秩序。

Would you please explain that colloquialism?

你能解释一下是什么桃色新闻吗？

His knowledge of English was extremely good, but sometimes a colloquialism proved unfamiliar.

他的英语知识非常好， 但有时对口语很陌生。

Hemingway develops the style of colloquialism initiated by Mark Twain.

海明威发展了马克·吐温倡导的口语风格。

I don't believe they refer to themselves with that colloquialism.

我不认为他们会同意这样的方言化表述。

Despite the Internet's obsession with slang, AAE is a lot more than a collection of colloquialisms.

尽管互联网痴迷于俚语，但 AAE 不仅仅是口语的集合。

The man in the Colonel's ship abused the others with offensive colloquialism and even shot at them

上校船上的人用无礼的口语辱骂对方甚至开枪射击。