Quick poll, just for fun. Are your nearest and dearest always to be trusted, or are they practical jokers? 
- If your DP or your DH told you to close your eyes, without telling you why, would you do so, without peeping?
- Would you do so if your DC told you to?
- When you were a child, do you think you would have kept your eyes closed if someone in the family had told you to do so?
I'll post my own replies shortly. Answers can be longer than a simple yes or no! 