29
A sex move that involves two guys getting it up the ass in weird ways.
Eww, I heard Jamie was Grand Slamming Jordan last night!
by Forgott|e|n July 30, 2008
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30
The act of lodging the wide end of a tennis racket into ones rectum.
After I was done cumming on Jenny, I finished her off with a Grand Slam.
by TheCerealKiller June 16, 2014
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31
when the turd you're shitting starts touching the water in the toilet bowl, while still attached to your arsehole.
Evrytime i eat Tex-Mex, i get a Grand Slam
by Nicoprofound January 05, 2006
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32
When you have a one night stand, but get a piece of ass regardless. Whores do this. And they don't even have to date!
Yo mom had a grand slam date with me last night! Have fun with your new baby brother!
by DeAssFucker December 04, 2003
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33
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
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34
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
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35
when a guy cums on some ones face and then slams his penis across their face
by lui rodriguez May 14, 2007
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