when i was 16 i was at a friends house playing video games. we took a break and went down to the kitchen. his sister was down there. she was home from college for the summer and was about 20. anyway, my friend, knowing i normally go commando, waited for me to position myself and then pantsed me in front of his sister. she just laughed and walked out but it was still embarrassing since i was a little below average in that department.