He's rewarded with a laugh, a throaty thing that could have come from either of them, but Locus isn't smiling so much as gasping, hips shifting swiftly and legs kicking to assist in dragging his pants down and off.

"Ooh. Got some teeth, do you?"

And that grip on his hair is being used to drag him closer, close enough to drag teeth against his earlobe with a low hiss.