Lighthearted post. Here are my things that have stuck with me:
Age 5 eating my brothers flake bar which he'd saved for days, then denying all knowledge
Age 12 (this is a bit outrageous), my best friend was coming for a sleepover. My mum told me she'd bought special snacks and rented a video because the next day my best friends mum was moving her to AUSTRALIA but she didn't know so I couldn't tell her. I didn't. We had a great sleepover but the whole time I was sad because I wouldn't see her again. She was telling me how her mum had booked for them to go to legoland the next day and she couldn't wait...the next day comes, she left, I got a phone call a few hours later saying her mum had lied about legoland and that they were at the airport to move to Australia :( she was sobbing and I had to act shocked.
I think about it all the time and wonder if I should have told her.