I'm fucked up. Give me Bucky in pony gear. Like a harness, bit, reigns, tail butt plug, hoof boots that go up to his thighs, etc.

+ He's Pierce's pony. Pierce uses a riding crop to train his pony.
+ Someone feeds him fucking sugar cubes by hand.
+ Early scene of Zola or some other Hydra asshole training him to be a good pony and this is part of him being broken.
+ Comfort when he's a very good pony
+ Delay/denial training so he'll only come when given permission
+ + + + All the bonus points for aftermath where Bucky has to confess he gets off on pony play. Could be Steve, Sam, Natasha... your choice!