Kakashi sighed in exasperation. "Naruto, are you even listening?"
"Yessir!" The blond chirped, giving him a mock salute.
"...Don't call me sir."
Kakashi stared at him and Naruto stared back, keeping a completely straight poker face.
Gloved hand met slanted headband.
Naruto cracked up, both hands covering his mouth as he tried to muffle his uncontrollable laughter.