This is a popular game, at Christian colleges, in which 4-6 young men skillfully arc hackie sacks at each other's exposed genitalia from adjacent beds. This is traditionally played in boxers with testicals exposed through boxer slit. To win the game one one must take direct hits to the balls and continue on, until no one could continue.
John is the king of Yaki Sack, he has balls of steel!
by EternallyHard February 26, 2017
Get the yaki sack mug.