Hack Sacking
A guy slices open his junk with a knife and uses a straw to suck out his sperm like it's a soda fountain.
My bro tried to hack sack at the party and ended up with a noodle soup of sperm.
He used a straw from a soda can and said it was 'the ultimate hack sack experience.'
He had to stop because his nuts were screaming 'no more!'