that time i was in my undies posing in the mirror in a dressing room, only the door didn't have a lock on it and a mom and her daughter walked in on me
Definitely the time my period leaked through my martial arts uniform during a testing.
One time I threw my yoghurt pot in the sink and my spoon in the bin.
I had a somewhat similar situation when I was into my first week of high school. There used to be this huge walnut tree that I used to sit under at lunch time as it was nice in the shade, but of course there were walnuts everywhere in the ground. I accidentally sat on one during my lunch break and when I got up to go back to class it looked like there was blood all over my dress just in the right spot yeah the seniors definitely judged me for the rest of the day, and my classmates too
I'm pretty sure I've had more embarrassing moments in my life but those memories have been shunned to the deeps of my brain where they shall never resurface lol