you know what I mean

idiom

informal

—used to suggest that the hearer agrees with and understands what has been said or to ask whether he or she does

I grew up there, you know what I mean, so I know what it's like.

He's kind of strange. Do you know what I mean?

He's kind of strange, if you know what I mean.

—sometimes used in the shortened form know what I mean

He's kind of strange—know what I mean?