What is Slam Jam?
1.
The act of having the most violent, outrageous, and deafening intercourse of any kind, providing the thrusting has the capability of serious injury if used incorrectly.
Yo biatch, its 2 clock, get yo tank azz in here and get yo slam jam
think that hurt? wait till i slam jam your ass
2.
1) To slam a penis directly into the vagina, anus or aural cavity.
2) Unleashing a furious blow to another person's face, chest, grundel or groin
Deeeeaaaaaammm boyeee, diiiisss bitch azz gotzta gets up, iza gotsa slam jam dis foool
Get up bitch, its time for me to slam jam the fuck out of your ass
3.
Mandatory slamming of a full beer by all comrades who are drinking. The goal being to be the first one done so you can call everyone else a pussy.
After finally getting some beer, everyone grabbed one and I announced Slam Jam! All bottles were hoisted up with mine being the first emptied.
The party friendly short version is "Mandatory SJ"
See