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Fucking in a Denny's, usually in the bathroom.
"She and I had a Grand Slam. Oh, we ordered it, too."
by Missynoob October 03, 2012
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A term in baseball when there is a runner on 1st, 2nd and 3rd, base; then the player at bat hits a home run and four runs are scored. Somewhat rare.
Do I really need an example for this? Grand Slam
by Simulationcity September 06, 2005
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When a guy receives a hand job, blow job, & get's to fuck a pussy and anus all in the same night
Jake : Wow there is nothing on tv tonight I'm so bored!
Kiersten : Well how about I tickle your balls, tug & squeeze your dick slobber all over it then you can stick it in my pussy & anus and fill me up with your warm sticky love goo!
Jake : O God Damn!
Kiersten : Oh yes you will score a Grand Slam now drop your drawers big boy!
Jake : Woooo! Play Ball!
by SlopNChop December 10, 2017
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Series of the following sexual positions performed in succession while maintaining continuous penetration: missionary then flipping to cowgirl then spinning around to reverse cowgirl and finishing with doggie style.
My boyfriend and I were so inspired by our team's gland slam that we celebrated with our own grand slam!
by zenithwit August 15, 2011
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A term more commonly used in the UK, it is simultaneous defecation and vomiting, usually upon oneself. Normally occurs post heavy-drinking.
Did you see that bloke who just Grandslammed in the bathroom?
by Chewy L. May 20, 2006
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A Grandslam is the upgrade of a Strikeout. Whereas a Strikeout is consumed in the order of marijuana, liquor, and beer, a Grandslam is performed by conusuming a line of Cocaine to leadoff the order. So it goes line of Cocaine, Bong Rip, Shot, Beer Chug, Release smoke. Grandslam.
Jack took a shotgun last night and was a badass until Ryan outdid him by pulling out a line and introducing us to the epic grandslam.
by big_tymer8067 December 11, 2011
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a common sex act in the colorado and rocky mountain area in which one sexual partner purchases a grand slam from Denny's restaurant, places the entire meal in his or her partner's ass, and eats the entire thing seasoned as sauce is commonly recommended
I was hitchhiking with a trucker, when we became really hungry. As we passed by Denny's, we decided the best way to fix our qualms would be to share a grand slam.
by rossthehaus June 07, 2011
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