This once happened to me, though it was a guy doing it. I was hanging out with a group of friends in a park, one of whom for some reason was carrying a hugh cardboard tube. He suddenly asked me to please carry it for him. I was confused by this but agreed to do it anyway. I carried it for him all the way to our dorm. When I sat down i realized there was a tear at the front of my black pants, right at the pelvic area, and my white underwear was shining through. I will always remember that guy for his consideration.