My embarrassing moment happened when I was a junior in high school. I had to act out a skit during a schoolwide rally. I was a Roman person, wearing a very realistic toga, and I had to go out there with the student body president and vice president, when I noticed my black panty line was showing through my white sheet.
So I took them and my bra off and walked out into the gym. The noise in the gym immediatley stopped, and everyone was staring at me. Then I felt a breeze around my stomach and legs, so I looked down. I was standing there completely nude! I had forgotten to properly tie my toga in the back, so it fell off.