Second-grade joke where the victim is asked if he has a "dollar-fifty" (The quarters being testicles and the dollar being a penis) When the victim answers "no" he is then humiliated in front of his peers.
a dollar fifty is used in a childish prank. "Do you have a dollar fifty?" It means a dollar for the penis, and a quarter for each of the balls. So, if you are outta money, and you saw "naww..." people will laugh at you.
having a fiftydollar bill is a way of slyly telling potnas that you are righteously high under the influence of marijuana
if you want to know if someone is high ask, "hey, got a fiftydollar bill?"
or, if you wanna smoke with them ask "Hey, wanna get a fifty dollar bill?"
-you will be led to crazy ephipanies and ridiculously good times-