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.
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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
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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.
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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.
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Oh man, that was a grand slam right outta the ballpark!
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A meal served at Denny's. Usually consists of eggs, sausage, pancakes, and a drink.
I ordered the Grand Slam for breakfast.
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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.
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