“Asgardian poppy,” he clarifies quickly. “Thor assures me that you’ll feel no pain! Besides, Steve gave it a go last week, and all it did was turn him into a snoozy puppy—not literally, but you remember.”
Adult, post-Winter Soldier. Bucky finally gets a new arm – but the anaesthetic has some… interesting effects on him. 
This could be just sex pollen fic, but instead it’s full of Bucky feels (while still being sexy and funny and sweet).