Yes, I have, when I was 19. Younger sister was having a sleepover at home with her girl friends and decided to pull my sweatpants down to my ankles in front of them as I walked into the living room.
Only pants came down, my underwear stood in place. Still, the girls had a good giggle at my expense and teased me a bit, although all in a good fun, no malice whatsoever. It made me blush in abasement, though!
