Wiktionary
you know what i mean
phr. (context colloquial English) (non-gloss definition: a phrase used to attempt to get the interlocutor to agree)
Wikipedia
You Know What I Mean
"You Know What I Mean" is a song released by The Turtles in 1967. The song spent 11 weeks on the Billboard Hot 100 chart, peaking at No. 12, while reaching No. 6 on Canada's " RPM 100", and No. 13 on Canada's CHUM Hit Parade.
Usage examples of "you know what i mean".
I could have given you a bit of the old jazz, you know what I mean?