Kakashi could have easily resisted Obito's touch - moved his foot or tossed a kunai at his hand - and typically would have. The only reason the thought didn't even cross his mind was because this was Obito, one of the few people who could get away with it. In fact Kakashi played along, wiggling his foot around like a game of cat and mouse.

Kakashi caught the thermos with a hand, showing off a little with his relatively plain expression and complete lack of surprise and set about quietly pouring himself a drink first. He spared the ANBU guard a quick, almost pitying glance before focusing on the task at hand.