I think your mother's *idea* was sound, in that we always tell people that they should tell somebody of a problem like that only if they can fix it, and pretend not to notice if it's something that can't be fixed. However, it sounds like she made the judgment for you that there was no fix, when, as others have pointed out, you could have bought new shorts, bought something to wrap around your shorts to cover it, kept your back to the wall, or even maybe bought a big sticker or duct tape or something to stick over the hole.