Topic basically says it all.
For me, It was back in the Elementary schools, I had this pair of shorts, and apparently it was ripped near the private, Don't worry, i wear boxers though 8D. But basically you can see my boxers, so i had to go through the whole day with the private part of the shorts ripped/open. My friend, who was the 1st person to notice, was actually a girl, and she saw it. D;. I hid it though, the rest of the day and she never told anyone. Thank god. More embarrassing moments to come. 