Heart
"I swear if you say something philosophical about friendship, love, or brotherhood, I will get out of this hospital bed and punch you to death."
"You and what arm?"
"Naruto."
"Sorry." Naruto smiled up at the ceiling. "Heart is fair game right? I can go on about the true meaning of heart."
"Will it save me from puns about our predicament?"
"I simply saw an opportunity and went with it." False innocence dripped from Naruto's voice. "It's your own fault really."
"Shut up."
"The true meaning of heart though . . ."
"Oh please don't."
"The true meaning of heart is to keep us alive."
"That barely makes sense from any standpoint."
"Yes it does."
"Okay, how?"
"Well without a heart in your body you die. And if your heart stops working you die. The same happens if your heart gets badly hurt right?"
"Right."
"Well the metaphorical heart is the heart of the community or home or the heart that falls in love." Naruto paused. "Without the 'heart' - the desires, ambitions, loves, and hates that are inherently human - that which drives us in life, we die. Or well not die physically, but emotionally and mentally. With nothing to drive us we fall into a void where we only exist, we don't truly live."
"I think I understand this one."
"So do you wan't me to tell you my theory on the importance of friendship?"
"I should have aimed that attack at your mouth, then you truly would be 'armless."
I make no apologies. I almost ended it at 'you and what arm?'. i think Sakura and Tsunade would chuck them both in the same room to heal because they are so done with their bullshit. Sasuke has probably been begging nurses for earplugs since the first day.