A term in baseball when there is a runner on 1st, 2nd and 3rd, base; then the player at bat hits a home run and four runs are scored. Somewhat rare.
by Simulationcity September 06, 2005
Series of the following sexual positions performed in succession while maintaining continuous penetration: missionary then flipping to cowgirl then spinning around to reverse cowgirl and finishing with doggie style.
My boyfriend and I were so inspired by our team's gland slam that we celebrated with our own grand slam!
by zenithwit August 16, 2011
The grand slam is the last ass clap before you send your cum to the equivalent of the pussy’s shadow realm.
by Zeccede July 26, 2018
Okay for this you need 4 gentlemen and a chick. A party may be a good place for this. The first three gentlemen need to make out with the chick. They each get to "first base." The bases are loaded as the "runners" advance. Finally the fourth gentleman approaches the chick and proceeds to have sexual intercourse with her. Once he "gets all around the bases" by this act he has "hit a grand slam home run." Or simply a "grand slam." The remaining gentlemen burst into the room and many hi-fives are exchanged while they all yell, "Grand Slam."
by AAAndrew May 14, 2004
Guy 1: Have you seen the bathroom?
Guy 2: No what happened to it?
Guy 1: Someone destroyed it...with shit. They cradled it AND upper decked it.
Guy 1: THE GRAND SLAMMMM
Guy 2: No what happened to it?
Guy 1: Someone destroyed it...with shit. They cradled it AND upper decked it.
Guy 1: THE GRAND SLAMMMM
by Ankylosaurus February 25, 2010
A meal typically served at Denny's. Usually consists of a log of poo on top of a pile of vomit, no drink.
by The Sporky August 11, 2004
Taking a large hit/toke from a bong/bubbler/vaporizer holding the smoke in the person's lungs while taking a shot of liquor then chugging a beer; finally doing a line and blowing out the smoke.
*Almost impossible*
*Almost impossible*
"that fool did a Grand Slam last night and straight up died; but we all thought it was ill to watch!"
by pappyinww2 April 06, 2010