It was a man with a speech impediment, and I began imitating him.

打电话的是个口吃的人，然后我就开始模仿他。

youdao

It's difficult to understand him because he has a speech impediment.

他的话很难听懂，因为他讲话口吃。

youdao

A speech impediment made it hard to understand Beethoven and often resulted in violent tirades if he was asked to repeat himself.

因为口吃，贝多芬说出来的话让人难以理解。如果别人要他再重复一遍，他通常会回以滔滔不绝的抨击。

youdao

Seventy-two years ago tomorrow, a chubby, stoop-shouldered, funny faced man with a speech impediment took a new job.

FORBES: Connect

While the newspaper mockery is not of a genuine speech impediment, for some there's a sense that it might encourage that type of behaviour.

BBC: Roy Hodgson: Is it wrong to mock the way he speaks?