Earlier today I stubbed my toe on the vacuum cleaner that was in the middle of the floor. As I stood there holding my foot complaining, Nathan said "I'm not kissing that!".
I said "Fine, next time you get hurt, mommy's not kissing your boo boo."
About five minutes later he was jumping off the couch and hurt his nose and came running up to me rubbing his nose. And said "I'll kiss your foot now." :D