"I may throw up on you."
Honestly, McCoy wasn't sure what part of his conversation made the kid think in any way that was an invitation to be friends. If someone had said that to him, he would've immediately paid the guy next to him to switch seats.
After all, he was a doctor and the kid was… well, a kid. A fresh faced cadet. Once they got off that transport, they'll go their separate ways, to their separate fields of study. It was highly unlikely they would ever see each again.
The kid saluted him with his flask. "Jim," he returned, taking a short swing.
McCoy had no idea what he was in for.