conversation while coming down the stairs

C: Stinkypants!
M: Don't call me Stinkypants.
C: I didn't call you Stinkypants.
M: Yes, you did. Don't call me Stinkypants.
C: I DIDN'T call you Stinkypants.
M: Yes, you did! Don't call me Stinkypants.
C: I DIDN'T call you Stinkypants!
M: Yes, you did! I heard you! Don't call me Stinkypants.
C: I DIDN'T call you Stinkypants! I said it to the wall!