Bisexual Grandslam

Having had sex with 4 different genders (doesn't have to be at the same time but if you do kudos). Named similarly of the Grand Slam in tennis. Having had sex with one woman, one man, one non-binary person and one agender person. Once you have achieved this you will have leveled up your bisexuality.

"I had sex with the hottest non-binary person last night, finally achieved the Bisexual Grandslam."

by Jaegrr July 15, 2023

Operation Grandslam

A crazy operation to break into Fort Knox, but not to steal anything.Instead,an "atomic device" is used to dirty the gold for 57 years.
Could not possibly work in real life.

Operation grandslam will have my undivided attention!

by Foo December 11, 2003

Facebook Grandslam

When someone posts and your wall and likes one of your pictures.

I hit a facebook grandslam on Lilly.
Oh bro that sick she's so hot.

by A smit nigga January 26, 2011

Parking lot Grandslam

Is the action of engaging in sex of a fist fight in a parking lot, preferably a Dennys parking lot.

You, me, Saturday at 9. Parking lot grandslam. Loser buys grandslams.

by Pseudomoose December 07, 2020

Double-Hand Grandslam

when you use two hands and hit it hard.

Jim: "Hey bill show me a Double-Hand Grandslam"
Bill: *uses two hands and hits it hard*
Jim: "Thanks"

by Velcroeater202 March 18, 2018