Grand Slam 

Who?

Seriously...who's that?

Grand Slam by gs August 21, 2003

grand slam 

anal sex

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

grand slam by bcimchuckbass March 1, 2014

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.

Grand Slam by YaMumz September 10, 2014

Grand Slam 

Term is used to describe the event of when you wake up with major morning wood the size of a Denny's plate full of breakfast awesomeness.

Eric: I woke up on my girlfriend's mom's couch to her whole family staring at my grand slam! Needless to say, they were quite impressed.

Grand Slam by RiddyTX June 17, 2015

Grand Slam 

Having sex with 3 women at the same time and having enough stamina to give all 3 of them an orgasm before you yourself have an orgasm.

Dude I had a grand slam last night!

Grand Slam by Agentzippo July 22, 2015

Grand Slam 

In Counter-Strike, a Grand Slam is the act of clutching one versus five to win a game / series.

I hit my first ever Grand Slam the other day, you wouldn't believe it! A one-versus-five at 14-15, what a game!

Grand Slam by walterP_tv February 15, 2018

Grand Slam 

When you full send for a coveted 4 days in a row

“Ready to for the long weekend?”
“Yeah, I’m going full send for a grand slam!”

Grand Slam by fullsend101 September 27, 2018