grand slam

A foursome. Where as 'hitting a home run' means scoring with one chick, a grand slam means four runs so four chicks.

"I hit a grand slam home run last night."

by matt January 05, 2004

Grand Slam

A “Grand Slam” is the act of deficating on the front most edge of a toilet bowl and bringing the lid down to splatter the feces all over the place

Yo bro the janitor got so angry he had to clean up my (Grand Slam)

by Clarence TCS January 23, 2019

Grand Slam

When you go from first base, to second, to third, and to fourth base multiple times throughout the night.

"Dude last night I got a Grand Slam from Ashlee"
"Nice Bro! I would kill to even go to first with her!"

by TheLoveDrunkPoet June 26, 2012

Grand Slam

When a woman orgasms so intensly she squirts, pees, shits and even starts her period.

That wasn't an orgasm, that was a grand slam.

by squirty girl April 21, 2012

grand slam

To awake one fine morn, and verily discover one's matress resembling a ordinance survey map with a rather warm chocolate log spread all over it as well as spew on your face and pillow.

"I do not think she will want to see me again after I came home totally ringbolted and grand slammed the bed, although your mum is a bit of a dirty slapper."

by Terry Fuckwit June 24, 2004

Grand slam

When you pull your penis as far back between your butt cheeks(chicken in the rough), and put it against a window to surprise someone

When i opened the blinds my brother surprised me with the grand slam!🍆🍑

by Joe cock February 21, 2017

Grand Slam

Rock band former by Phillip Lynott when Thin Lizzy split up. Toured Europe continuously but never recorded anything due to Lynotts untimely death.

Grand Slam bootlegs are very sought after by collectors.

by black flag May 29, 2004