Am I the only one who has problems with the idea of a 'watershed'. In geological terms I can understand it is the line at which water is shed in one of two directions. But in terms of TV & radio content it is a time after which the baser instincts of presenters (except their instinct for self-preservation) take over.
At what stage does 'post-watershed' become 'pre-watershed'?
I understand that the comments discussed went out at 2am. What if it had been 4am, or 6am. There doesn't seem to be a morning watershed when we go back from being post-watershed to being pre-watershed.

HELP!!