Funny stuff, hair. you can feel like a million dollars until you glance in a mirror or shop window and notice it's all gone awry. Or you've rubbed you eyes and mascara is smeared everywhere. Or you have bits in your teeth and no-one is kind enough to mention it.
Or, and I speak with a certain amount of authority here, you are at a swanky party in a rather lovely get-up. You nip to use the facilities and sweep back down the stairs to re-join the merrymaking. Where, fortunately, someone is kind and draws your attention to your drawers. And the fact your lovely get-up is tucked into the back of them. Yes, people really do do that.
I decided to brazen it out and guffaw whilst rearranging my finery. It lessened the embarrassment for both of us I feel. Possibly. In any case I was grateful he felt he could mention it instead of leaving me to look like a total tit.
In case you worry this may ever happen to you remember to wear nice pants, it's not only when being run-over that you may need them. And I have been run over as well, but mercifully I wasn't called upon to display my nethers at any point during the process. But that's another story.