Horse Pile 

An absolutely massive mound of dump as if a horse had shat

"Ya'll see Kaitlyn Bennett pass out at that party and Horse Piled"

Horse Pile by Slim Bean June 19, 2020

whipping a pile of horse bones 

The phrase "whipping a dead horse" means to attempt to revive a moot point or issue. "Whipping a pile of horse bones" means to keep making futile and pointless attempts to revive interest in something that no one has cared about for so long its rotted away into a skeleton of its former self.

AKA: The Simpsons

Seasons 1 through 6 were the best. By season 8, FOX and Matt Groening were whipping a dead horse. Which means for the last 10 seasons they have been whipping a pile of horse bones.

whipping a pile of horse bones by weasel1969 October 9, 2008

pinkiejack horsepie

pinkiejack horsepie is when a man buys a stuffed pinkie pie doll, and proceeds to tear a hole in the back to fuck it. After he cums in it he'll watch bojack horseman while sewing the doll back up.

Last Thursday I grabbed a pinkie pie doll from toys r us and pulled a pinkiejack horsepie on it.

pinkiejack horsepie by pissypiss December 25, 2020

Horsepire 

A mixture between a horse and a vampire; often referred to fowl or homely looking people

"Beth looks a lot like a horsepire. I can't believe that girl has any friends."

Horsepire by TheRingBearer98 March 3, 2009

horsepilled 

Word typically formed with the -pilled suffix to show how addict a person is to the prefix.
Here, it refers to the addiction of horses, and more specifically, the Anime Gacha Game: Umamusume.
An anime horse girl game.

Dude, my friend hasn't touched grass since he discovered Umamusume on June 26th, 2025.
He's so horsepilled

horsepilled by Vayct September 6, 2025