A game usually played at high school dances, who's objection is to make out with at least one person from every grade, including your own. Another variation of the game is that, in order to win, you count each person you make out with by points. Someone in your own grade, for example, could rank as lower points than someone in the senior grades. The person with the most points win.
Virginia: We should totally play Grand Slam at semi tonight.
Jared: I definitely won Grand Slam; I'm only a niner and I made out with over 12 grade twelve bitties.
by Virginialikeswomen February 21, 2011
Get the mug
Get a Grand Slam mug for your dog Abdul.
N. The unusual situation of soiling three different pair of underpants in the same day.
What happened to Joey?

He had to go home. He hit a skidmark grand slam.

Man, that sucks.
by LobsterSausage February 11, 2011
Get the mug
Get a skidmark grand slam mug for your brother-in-law José.
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 mug
Get a Grand Slam mug for your fish Larisa.
After marriage, when a couple has at least 4 kids. This could possibly happen within the first year of marriage if the couple has quintuplets, or within 4 years if they are diligent.
Zach and his wife keep poppin out babies like every single year. He is swinging for his 3rd mormon grand slam with this last baby.
by mormon_playa September 26, 2007
Get the mug
Get a mormon grand slam mug for your coworker Riley.
A coin grand slam is something that any lazy schmuck who's worked a cash register knows all too well. It is the much-maligned phenomenon that occurs at the end of a transaction when the change that you owe back to the customer requires you to use at least one of each of the four principal coin denominations (quarter, dime, nickel, and penny) ... thus making you hate your job that much more.
*Cashier rings up customer's single $9.99 item and the computer shows a total of $10.94 after tax*

Cashier: "Holy-bejeebers another coin grand slam?!? That's my third in a row :( I can't take this s*hit anymore ... "
by wxflurry September 25, 2010
Get the merch
Get the coin grand slam neck gaiter and mug.
Pulling off the Des Moines Surprise, Sioux City Superman, and Topeka Destroyer all at the same time.

Essentially, you have to straddle the girl's face as she's giving you head, pee in her mouth, poo on her chest, and vomit on her face.

Technically only theoretical because no one has proof of ever completing this rare trifecta.
Dude, I was so close to the Midwestern Grand Slam. I pulled the Des Moines Surprise and Sioux City Superman off at the same time, but she moved her head before the Topeka Destroyer hit her.
by Superscope March 01, 2008
Get the mug
Get a Midwestern Grand Slam mug for your dog Günter.
Derived from the term Grand Slam, which involves one team of the 6 nations defeating all others in the competition in one year.

The Scottish Grand Slam involves Scotland defeating England, because this is the only game that truly matters to Scottish fans.
"It's a shame Scotland lost to France, but we're still hopeful of a Scottish Grand Slam."
by TheBald March 22, 2010
Get the mug
Get a Scottish Grand Slam mug for your friend Riley.