Kakashi was about to quip back, and rescue his captured foot by bopping Obito on the head with the one he abandoned, when Gai made his attempt to pin him. It wasn't as successful as it could have been, Kakashi managing to give Gai a gentle but poised blocking elbow to the ribs, good eye twinkling with the challenge despite his weariness.

It was unfair, really, to gang up on him two against one; especially when that one had just returned from a mission (albeit a simple one), and also when the one happened to be satisfyingly full of food... However, the flare in his eye was all the permission he gave, and most likely all the permission his friends needed, to let this spiral a little out of what was fair or otherwise.

"How unfair," he simpered. "Giving me the offer of an escape while you have me handicapped." He wriggled his foot in Obito's hold, giving them both 'warning' looks in return, but the crease in the corner of his eye - barely noticeable unless you were looking for it - was a telltale sign of the smile hidden under his mask.