[... It's probably exactly that touch that kind of just short-circuits his brain. Shiro has nice hands. Sure, contact isn't new for them, but everything is still like in the middle of getting reprocessed in his head and he can't help that it leaves him a (lot) little dumb, right?
So he looks back up at Shiro just enough, gives him a look with some of the hair still in his eyes, and says.]