wet 40
Back in the day (the 70's) in LA County Jail - you were allowed to have cash - up to $40 - to spend on commissary and whatever else you wanted to buy. In order to get the inmate the cash, you had to hand it to a jailer who would then put it in an envelope and get it to the inmate. What they didnt know was people were putting hits of acid on the bills. Once they found this out, whenever you would give money to a guard, they would dunk it in water before giving it to the inmate... thus the term "Wet 40."
Hey Holmes, did you get any money for smokes?
I got a Wet 40.
You got my money bro?
Here's a Wet 40.
I got a Wet 40.
You got my money bro?
Here's a Wet 40.