not know from nothing

I got a woman who didn't know from nothing.

He doesn't know from nothing about anything, but he's nuts on mathematics.

Files thinks he's just an old fellow who don't know from nothing, as they say.

"So many girls nowadays don't know from nothing about cooking.

The company mechanic is waiting outside, to get on board... No, he don't know from nothing.

If they stop ya at the border ya don't know from nothing.

We did get this, though, the stuff was delivered to them via a half-witted little guy who didn't know from nothing."

But you don't know from nothing, see?

You don't know from nothing, friend.

A little lamb tells her, "I don't know from nothing, I was born yesterday."

"Catherine didn't know from nothing," Broffski said.

I got loads of moo and I don't know from nothing about this here racket of yours, see?