I woke up this morning and went to change my rather-full Mooncup. When I inserted it the cup immediately flew waaaay up there, as it often does when I'm mid-period. I fished around for it for a few seconds to check if it had opened (note: it's now totally stemless). For a second there I couldn't find it, then got hold of it but couldn't work out what I was feeling. Then I realised.... the little sucker had done a complete flip and was upside down! Not quite what I needed before I was fully awake... it took me a minute to grab hold of it enough to remove it and try again. I knew my cup was great but I didn't realise she was so gymnastically talented too!