Bucky laughed, because it was funny. The idea that he'd hand Steve stuff that would turn him on. He never would, not unless Steve had wanted it, which he wouldn't. And sure as hell not with Clint sitting there and a one eyed kitten watching them. But it was funny a little for the wrong reasons, because Bucky did know how that had gone, and had actually been a little annoyed with Tony being around while it happened, once he'd heard about it. He'd gotten over it fast, but he had been. "Swear, this doesn't do anything to your dick, Steve," Bucky said bluntly, still smiling. "That part'll work the same as it always does, it's just the head that gets happy. They gave it to a party full of Capitol rich assholes - can't be that many side effects that'll last. People would care if THEY got fucked up." Victors not as much. They just patched them up and kept them going. He whooped playfully when Steve downed the tea, grinning wider.
There was no rancor in it though. Bucky felt too good for bitterness. "Aww, Stevie. You'll hurt her feelings." Bucky leaned forward, fetching Moo and lifting her up to look him in the face. She was less than thrilled. "C'mon, sweetheart. Show Stevie what you are. Moo for him." Bucky mooed again for her, to demonstrate. She put a tiny paw on his mouth as if to tell him to shut up. "She's got opinions. You brought me a judgmental cow, Barton," Bucky accused Clint.
"Just down the whole thing. 'snot that much in there. Just takes a couple of minutes," Bucky promised. He snorted at Clint. "You are. And after I gave you evil flappy feet things with hats." Which wasn't going to make any sense to Steve, either. Bucky leaned into Steve when he settled between them, companionable and easy about it without that instinctive first shrink away, right shoulder budged up against his. "We're 8 boys," he told Clint. "Closest we get to a cow's when we see leather." Moo made a noise and Bucky laughed again. "Not you. You're safe. You'd make a lousy coat anyway," he promised her.