[Alright, the "leave me hanging" comment finally clues him in. There's a second of dawning realization on his face before he actually scoots a little away from the other man. It's nothing against you Leon. He just doesn't touch people.]

It is better that your unmet fist is left alone, lest the poison permeating through my skin brings you to an early demise.

[At least he is not so socially inept that he doesn't know what a "fist bump" even is?]