Fortunately, that has not been an issue over the past years. If I run out of clean underwear, my back-up has been a pair of gym shorts or swim trunks. Now, I did have an occassion where I put on a jock and red basketball knee-length shorts. I had to go to the toilet at work and from the next stall, the person could see what I had on when I dropped my pants down to my ankles while sitting on the toilet. No embarrassment though cause I could have been going to a game after work.