[Vocabulary] You know what I mean

[jc.analyst]

During a conversation with a colleague, if he says this below, what does it mean?

"You know what I mean"

Thanks for your help.

 

[5jj]

This is often a fairly meaningless filler in British English.

 

[MartinEnglish]

I think it's ok to use "do you know what I mean?" if genuinely checking that your listener understands what you are talking about.
However, it has also become an irritating affectation where (usually rather stupid) people add it to almost every sentence. I suppose it is born from an insecurity that listeners won't know what they mean because they are so inarticulate.