I usually tell this same one .
I was fifteen years old and home alone. I decided I was going to cook roti - flatbreads - and surprise my mom! So, I started cooking. I used waaay too much oil. More is better, right? So I took the roti, after it had cooked on one side, and flipped it over dramatically.
That was the day I learned a) too much oil is not better, b) do not ever flip a roti dramatically, and c) if you must, flip it away from you, not toward you.
Hot boiling oil splashed all the way up my hand and arm. I screamed.
In about five minutes these huge puffy blisters had shown up on my arm, and the pain was excruciating. but, I didn’t want my mom to know what I had bene doing, so I first painfully cleaned up all of the evidence, crying and sobbing as I did it.
Finally about half an hour later I called my mom to come get me, as the blisters were not going down, and it still hurt. She didn’t believe it was that bad! And told me to put some ice on it.
I hung up, tearfully, and did so. I waited like an hour before calling her again and begging her to come home. She did, and to her credit, I will never forget how her face fell when she saw how bad it actually was. She felt so bad for leaving me. She took me to the emergency clinic, where the guy had to pop all the blisters and then I had to keep it covered for three weeks. I had nightmares where they took off the bandages and my arm was scarred black.
Now, eighteen years later, you can hardly see the scars, only if I point them out to you.
There are other dumb things, but that’s the one that always comes to mind.