Bucky thinks it would be more conducive if he just strangled him but that's another thing entirely. Hydra hadn't taught him to take care of himself and had taken his choices from him. What had he really expected when he'd gone looking?

He stands up to go into the bathroom to get his clothes. His filthy clothes. Bucky strips off the robe before he's even to the bathroom. Hopefully Tony doesn't mind what he had been wearing but he kind of doesn't own anything else.