A supply drop is when you yield a Ballon around your used condom and drop it from a highplace and can be turned into a game with your friends to see who can toss it off the highest building.
Friend one: Hey have you been collecting your used condoms for supply drop?
Friend two: You know it can't wait to play.
Alt
Guy: Hey after where done here can we use this for supply drop
Girl: sure
JK Supply Drop
"JK Supply Drop! JK Supply Drop!!" *puts piece of bread in JK's backpack*