The Coriolis effect is very real. It just isn't strong enough to affect such a small system (i.e. water in a sink etc.).Coriolis effect has been used in novels and movies for ever
I think the french professor in 20,000 leagues beneath the Sea used it first, when he was trying to determine where Captain Nemo was taking the Nautilus. I love Jules Verne, it must be true or I'll be devastated.