Sorry but all of the parents saying they would punish the child again need to get a grip. Honestly if your kid did this to you then you deserved it and just got outsmarted by your 7 year old.
Reminds me of when my daughter got told to sit on her timeout mat for 10 minutes by her mother. So when her mother leaves the room she got up and put her mat in front of the TV and sat on it. Sorry but can't get mad at her. She did exactly what she was told to do.