Dead or alive?

[Mojocvh]

http://www.bbc.co.uk/news/uk-scotland-highlands-is...

"The man had fallen from the Kessock Bridge at Inverness on Friday and, after attempts to resuscitate him, he was pronounced dead at the scene.

An undertaker took the body to Raigmore Hospital where, during routine checks, staff became concerned that the man was showing "potential signs of life"."

[Corpulent Tosser]

What would a 'potential sign of life' be ?

I have heard of dead bodies making a belching noise, Mrs Tosser has dealt with the odd stiff