Bucky gets repeatedly kneed in the balls by a sadistic bad guy with a specific ball busting fetish. I don’t care what kind of sick side effects this has. Think crying, pleading, vomiting, pain/fear boners, humiliating bodily reactions, you name it.

+ Bonus points for Bucky standing up or being suspended while it happens so there’s less crushing and more blunt force trauma going on
++ Bucky is still the asset and didn’t do anything to warrant punishment
+/- Hitting & other forms of torture could be a part of it, too, but I’d really like the knee being rammed upwards and into the groin area concept
+/- Doesn’t have to involve serious medical injuries. I’m good with intense pain alone but that’s entirely up to the filler
+++ possible aftermath: Bucky has a complicated relationship with his balls (body dysphoria, touch aversion, inflicting pain to get off or to keep himself under control, ruining his own orgasms by twisting them, getting them surgically removed...)

Prompt inspired by this fanart here: https://www.redbubble.com/de/people/randymeeks/works/25940630-the-end-of-the-line?SSAID=389818&asc=u&utm_campaign=banner&utm_medium=affiliates&utm_source=shareasale