NORWEGIAN WOOD.
Towards the end of the John Lennon song 'Norwegian Wood' the protagonist "crawls off to sleep in the bath..."
With the words of this song in mind I once crept off to sleep in a bath after a party in South London. I've tried to sleep in a tent on Dartmoor, and tried to sleep on an Amtrak train from Savannah to New York, but that night in the bath was the coldest, most uncomfortable, and sleepless night of my life.
All together, sleeping in a bath is a very bad idea.