One part of him was far too amused at Itachi's face of horror, but the other part was too busy standing up and backtracking.

"Hey--Itachi--Itachi, I was just making a bad joke. A really bad joke, 'kay? I doubt Sasuke will father anything until he's thirty and we're old and wrinkly." Agh he'd broken his cousin. He reached for Itachi's good hand.

"I'm a dumb idiot. I'm sorry."