This was a phrase said back in the early
mid 90s as a
game. If someone messed up something that they would normally try to play off or correct they would have to say "Fifty." If someone else said "No Fifty" before the person said "Fifty" you would get to take your hand and swipe it really
hard across the back of their neck giving them an Indian Rug burn if you will (one
swipe with a lot of pressure to create friction so that it hurts). Another common form is saying the phrase "No take backs". {Used in the Maryland area.. don'
t know about other areas}