Kakashi's eyebrow disappeared under his headband. Tenzou baiting him like that was definitely something he'd have to get used to. He seemed to enjoy the power trip; a vast difference from how he used to act but an endearing one nonetheless, so Kakashi didn't mourn the loss too much. He wouldn't, however, let his impertinence go unpunished.

In an abrupt movement the copy-nin rose to his feet. He snagged the cup out of Tenzou's grip with one hand, hooked his mask down with the other and downed the contents only to pick up his own fill and do the same.

"There," he said, slamming his empty tumbler down next to Tenzou's just as empty one. "I'd rather a one than a half. Loser pays, don't you agree, Tenzou?" he smiled bright, then slipped his mask back up over his nose before turning.

"See you outside!" he called, a hand over his shoulder in a wave before he disappeared down the stairs.