I have several moments of the top of my head, that I wish I could take back.
In elementary school a friend of mine had been tossed down the hill into a row of prickly bushes, and I and a number of kids were brought to the principles office as witnesses, and I had this thing about being really proud of not going there once in my time at school, and I thought I was in trouble, when the teacher started talking I began to laugh loudly, and the teachers were quite upset by that, nowadays this event doesn't bother me much at all, since I was just a small kid during the time.
It was getting dark and I was over to my grandfathers house with a lot of family as well, and I was swimming in the pool with my brother and cousins, well one of my female cousins and me got talking about how we always wondered what the other genders private parts look like, I don't have any idea what made me do it, but I showed her mine and she was quite shocked, even though she had said she had seen one before (I think she might have lied). Next I was interested in seeing hers (no clear idea of my age, but I was young maybe 10-11 and she was a few years younger) anyway by this time my cousins twin brothers had already got out of the pool and had gone to tell there parents, I ended up not being able to see anything, because of the darkness of the water and the bathing suit she had which was on pretty tight. So I was really really embarrassed on the car ride home, I bagged my family to forget about it, and I was told that my aunt and uncle might want to talk to me, but thank god they never did.
I was up at my aunt and uncles house (not the same ones from the previous paragraph) And I was looking through an old year book with my uncle and he told me to guess which student in the class was his mother, and I thought I knew but I didn't say, and he pointed to the one I thought it had been, and out of the strangeness of my mind I decided to say "That is the one I thought, because she looks weird like you", yeah I was quite embarrassed by that.