When a guy is able to have sex with all the sisters and mother of a family.
Did you hear Dave hit a Grand Slam, he had sex with Sara, her mom, and sister (separate occasions).
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when you and someone hit all the bases in one night, grand slam.
bella: yo how many bases did you hit last night?
connor: grand slam baby
โwow i hit the grand slam last night!โ
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When you suplex a chick during sex and try to put your dick in her vagina as you slam her down
I tried the grand slam last night. I think I sprained my penis.
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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.
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Being bullied to the point that you snap, pick up the bully and slam them on thier face.
Back off or I'll Casey Slam you!
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Being so hammered that when you walk you slam into things in your path.
When you are slam-hammered it's hard to walk down a hallway without slamming into the walls as you go.
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When a male and a female have a double sided dildo and the male puts it up his butt and the female puts hers in either her vagina or butt and the progress to push their butts together.
Me and candy were slamming butts earlier and now I'm walking like I road a horse for days.
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