Grand Slam

A male performing a one night stand with a female successfully penetrating, and ejaculating in every love hole, before going to sleep.

"Hey man, did you get with that chick last night?" Ya man, I hit a grand slam on her.

by Mr.nunes March 10, 2009

Grand Slam

When you have gotten to third base with someone, and instead of loosing your V card to only them, you have a Threesome instead.

Hank: Yo man you will never guess what happened last night with Janet.
Jimmy: Did you finally get to home plate?
Hank: Even better, her sister was there and wanted in, so I got a grand slam!
Hank: word

by Daniel the Jewish Wordsmith July 11, 2008

Grand slam

A highly prestigious award given to the team who finishes UNDEFEATED in the 6 nations rugby championship. In other words, NO TEAM COULD BEAT THEM, THEY WERE TOO GOOD FOR ANYONE, NO-ONE COULD MATCH THEM FOR CLASS, SKILL, FINESSE, PACE, AGILITY, PASSION AND SHEER BRILLIANCE.

Wales won the GRAND SLAM after kicking everyone elses arse.

by God HelpEnglandInTwickenham June 23, 2005

grand slam

when you are heaving sex with a chick, take out a baseball bat and shove it up into her anal cavity, then pull it back out and hit the chick in the face with it.

My girl was being a bitch, so i gave her a grand slam the next time we had sex.

by john February 14, 2005

Grand Slam

Like a slam, only grand.

Oh man, that was a grand slam right outta the ballpark!

by Matt November 03, 2003

Grand Slam

A meal served at Denny's. Usually consists of eggs, sausage, pancakes, and a drink.

I ordered the Grand Slam for breakfast.

by MoleDeMesa October 02, 2003

grand slam

As with the other baseball references to the bases (first base, second base, and so on) the grand slam refers to having anal sex. Since it is one up from a home run (just vaginal sex), and doesn't usually happen quite as often.

Mike hit a grand slam with that chick when he boned her up the ass.

by Chris11 November 22, 2007