"how now brown cow!"

Ok, I have no clue where it came from, but when I was little it was one of those sayings that just made you laugh. No one that I know of knows what the heck it means. I said it the other day and busted out laughing and all my hubby could do was sit there and stare at me like I had been abducted by aliens lol!

He's from the other side of the state, so Im thinking maybe this originated from my side of the state? Im in Michigan.

am I weird or have you heard of this too? If so, can anyone tell me what the heck it means!? LOL