I Spy

When I was about 9 years old, I was at my cousin's house and he lured me into using his binoculars to look into the neighbour's window (as in "here are my really cool binoculars" and then "I wonder what the neighbours are doing"). He let me have a good look for a few minutes and then told me that I was actually committing a crime. For years afterwards, I really thought I had broken the law.

It was all downhill from there onwards really.