"I'm fine," says Bucky, perhaps under the false notion that if he says it enough, one day it'll be true. "I'm drunk, not d--"

He cuts himself short, having some sense of reason left to him through the haze to not bring up the subject of his mortality in front of Steve -- not now, not after what they just went through, again. He sucks in a huffy sort of breath, and coughs it out with a belligerent repetition of his earlier point, "I'm fine."