DH and I go swimming every Sunday. One slightly awkward thing: one of my students is a lifeguard there. I don't mind but he clearly feels weird about it as he always avoids eye contact - he obviously doesn't want to 'see' his lecturer in a swimsuit - fine!
Only today when we went swimming I had just got my period. I had my Mooncup in and thought it would be fine. I checked every couple of hundred metres whilst swimming and all okay. Got out, chatting to DH at side of pool, glanced down - and there was, er, rusty coloured water going drip-drip-drip very fast down my legs and forming into a pool. 
I had two seconds where I thought I'd better tell a lifeguard so it could get cleaned up - and then I looked up and saw my student walking towards us! I so know this was the wrong thing to do but I hissed 'Move, quick' at DH and did a penguin waddle back to changing rooms as fast as possible, clenching pelvic floor for dear life and possibly leaving a delicate rosy trail behind me.
I am totally disgusting, aren't I?