Grand Slam

When four or more of your friends hook up with the same girl at different times. Can only be completed if each person goes all the way (i.e. hitting a home run).

Dude, me, Bobby, Ned, and Tom hit a Grand Slam with Jennie.

by YaMumz September 10, 2014

Grand Slam girl

a fake tennis fan who only follows the Grand Slams and none of the smaller tennis tournaments

S: Omg, did you watch Indian Wells last night? That Delpo match was insane!
N: Uhh... durr... what?
S: Ugh, you're such a Grand Slam girl.

by FThunder526 May 17, 2018

grand slam

anal sex

4th base?
No. Grand slam! Right in the ass!

by bcimchuckbass March 1, 2014

Rhode Island Grand Slam

The act of spitting on a females pussy and doing a 360 backflip and landing in the girls pussy.

I landed a Rhode Island Grand Slam on Jessica last night.

by jugzjudy April 17, 2023

Inside relative grand slam

A man scoring 4 different generations of women at the same time within the same family

"Hey Bobby, I went to my girlfriend's family reunion, and I scored an inside relative grand slam!"

by BeatleBabe007 September 18, 2024

Grand Slam

When you fuck six girls at once by sticking your dick in one girls, your tongue in another, and your hands and feet in the pussy of the four remaining girls. Note: there will be a lot of moaning and it will look like you have girls growing off of your limbs.

I just Grand Slammed the six hottest girls is school last night!

by globglogabgalab21 June 9, 2019

West Virginia Grand Slam

The act of filling her main 3 holes with cum and then slapping her in the face with your penis afterwards.

“I did a West Virginia Grand Slam to her the other day.”

by TheBangerOfMothers April 12, 2025