Last night at my 2am visit to the loo I spotted a dark shadow on the bowl just emerging from under the rim. A quick limp back to my room to collect specs and, on seeing clearly, it was a slug!! It waved its little horns at me. How could it be there?!! The loo was cleaned and bleached that day.
I managed to dislodge it with some difficulty (and a blunt instrument) and flushed it away. My previously urgent need to spend a penny mysteriously disappeared needless to say.
This morning DH checked over the cistern and pipes etc and luckily found no other such creature. But how on earth did it get there? Will there be more? and yuk yuk yuk!! 
Petition to stop the EARLY RELEASE for PC Harpers killers



and we've never had a problem since. 