Like a slam, only grand.
Oh man, that was a grand slam right outta the ballpark!
by Matt November 3, 2003
Get the Grand Slam mug.
A meal served at Denny's. Usually consists of eggs, sausage, pancakes, and a drink.
by MoleDeMesa October 2, 2003
Get the Grand Slam mug.
When you have a joint,Blunt,Bong,vaporizer one after another
Alfred Giggles:I have a quarter o , do you guys want to do a grand slam

Arnie Berkwitz: as long as it is free
by dj dubsack jones December 25, 2008
Get the Grand Slam mug.
A sex move that involves two guys getting it up the ass in weird ways.
Eww, I heard Jamie was Grand Slamming Jordan last night!
by Forgott|e|n July 31, 2008
Get the Grand Slam mug.
When a guy is able to have sex with all the sisters and mother of a family.
Did you hear Dave hit a Grand Slam, he had sex with Sara, her mom, and sister (separate occasions).
by Mr.Crayonbox February 24, 2021
Get the Grand Slam mug.
when you and someone hit all the bases in one night, grand slam.
bella: yo how many bases did you hit last night?
connor: grand slam baby

“wow i hit the grand slam last night!”
by gymgirl150 February 6, 2022
Get the Grand Slam mug.
When you suplex a chick during sex and try to put your dick in her vagina as you slam her down
I tried the grand slam last night. I think I sprained my penis.
by rrK_NAFK January 5, 2020
Get the Grand Slam mug.