One incident that doesn't affect your life anymore but you still remember it like happened yesterday

I have many....but the one i will remember forever was supporting my one friend who was doing prank on my close friends. I ended up loosing those close friends because of this moron.

My 3rd year of college 🥲

I lost 5 marks in Maths 10th board exam because I was overconfident.

It was a 6-marker, standard NCERT question on finding the volume of ice cream in a cone. They had provided the hemisphere of ice cream on the cone, too, but for some reason needed the ice cream only within the cone. I calculated ALL ice cream volume, thinking extra answer = extra marks? 😭

Scored 95 out of 100. This question is my guess of where I lost, I was very confident of rest paper.