when the balls are stacked on top of each other vertically and the penis is thicker than it is long.
audrey: this guy i met at the mall had a stacked quibber.
noelle: ew no not the stacked quibber.
The act of farting quietly immediately after someone near you gets caught farting and playing it off as part of their fart
Ty: Dang Andrew that fart was raunchy. There’s layers to it!
Andrew: That’s not all me! Logan is stink stacking on my fart!
Logan: You got me guys.
Using more than one abbreviation in a row.
Abbreviation stacking looks like this: Wouldn't've or you'll've'd
simping in a group when playing among us
"guys we need to stop stack simping" -corpse husband
To use both hands to stroke when giving a handjob.
Last night was crazy, my girlfriend gave me a double-stacked handjob!
Combination of LSD & Ecstasy.
"Stacking" on the experience.
Bro, I'm totally using the stacks with my girlfriend later tonight!
A triple stack involving 3 or more people, each sealed together with a slice of cheese.
So I was having an NMN triple stack with Nick and Mac, which went really well.