So, I run. Having given birth to 3 DC, I have a minor issue with wee coming out when I run. Discovered some time ago that the Mooncup, which I already thought was a fabulous device, could fix this problem.
Tonight I was in a bit of a rush getting ready (in fact, got changed in loos of local soft play centre). Put Mooncup in, got dressed, went running. While running thought things down there felt a little... odd. Wondered if perhaps it hadn't unfolded properly or summat.
Got home, tried to remove the bugger. Couldn't find it! Was literally rummaging around for it. Thought for a few minutes it might have vanished into the Pouch of Douglas (yes, I have been here that long). After much 'bearing down' and contorting got hold of the edge of it and whipped it out.
Had put the damn thing in upside-down 
Moral of the story: engage brain when inserting Mooncup. Please share any similar fanjo-related mishaps to make me feel less stupid.