A big bill such as a $20 or a $100 wrapped around a roll of $1 bills in order to make it look like more money than it actually is.
I owed Don Giovanni 15 G but didn't have time to come up with the money, so I tossed him a jewish bankroll wrapped up in a c-note and got the hell out of there before he knew what hit him.
"Unicorns are like Jewish Foreskins, They don't exist!" or "Have you seen my keys? They seem to have made like a Jewish Foreskin and just up and disapeared!"