TV turn off.

Yesterday Zack was not behaving very nicely. After being told three times to stop doing something, the television was turned off for the night. He promptly informed me that he will finish his homework, read his book then go to bed early. Once he was ready for bed he said "Every time you take TV away from me, I will go to bed early!" Is that a challenge because it sure does sound like a good one to me!
Silly boy has no clue.