Have you ever been in a precarious situation and had a vital piece of equipment fail? I have always worked with men in a predominately male environment so to have the elastic give way in my stupide thigh high stockings was more than a little embarrassing. We were miles away from the nearest shopping centre (mall) so the only thing I could do was remove them and hope no one noticed. I think I got away with it ~ either that or they were all too nice a gentlemen to mention it.
So, the moral of this story is always buy good quality stockings.