To perform the Scrotum Slammer you need a screw driver and you shove it up your partners( preferably males ) scrotum which will cause an uncontrollable orgasm. It may last 2 - 3 hours depending on the type of screw drivers.
Oh my gosh last night my boyfriend gave me a scrotum slammer with a flat head and i had an orgasm for 3 hours, and then i fucked your masha.
by pau-weezy and B'eans April 8, 2009
"Chris shut the fuck up you scrotum slammer!!"
by iitswhereitsat June 13, 2006