Just . . . blinks.
Does his hand really smell that good? He hasn't showered since before working out today...
He's keeping his hand in place, booping Charlie's nose with one of his freshly scented fingers.
Pressing his fingertip against Charlie's lips, slowly flipping between them. His other finger comes right in, poking Charlie's nose again.
Does he... wanna suck on them? Even better than sniffing.
Twisting his fingers in Charlie's mouth, letting them slide right down his tongue... hopefully he doesn't mind any gymsweat or musk on Sam's fingers.
"Taste good?" Looking into his eyes.