hoseball 

One who constantly exhibits flaky and noncommittal behavior.

Celicia is a fucking hoseball, she never goes to tennis practice because she goes back and forth between committing to the team and not.

hoseball by Ass wiper May 14, 2018

HorseFella 

iFunny user HorseFella. He posts pictures of ponies cause he's a brony faggot.

You're subscribed to HorseFella? You should kill yourself.

HorseFella by BlueMoon1890 March 31, 2019

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