"Seriously though, what kind of idiot calls an ambulance because they have got the shits? In what world is that an 'emergency'? Prats." For some people it is an emergency. I have an ileostomy and everyone else with an ileo that I have heard of who has had Norovirus has ended up in hospital, many of them via a 999 call having lost 2-3 litres of fluid in less than 15 mins... Calling 999/going to hospital is preferable to renal failure!!