I've been refused passage on a flight because the Capt thought I was too drunk to travel after the ground staff asked me if I wanted to travel on their earlier flight for which the gate was closed, this resulted in them "I presume" calling the aircraft saying there was one more passenger coming.
He obviously had got out of the bed on the wrong side, I can only hope that his flying observance and decision making were of a higher standard.
I had actually had two pints ten hours previously and had a reasonable kip on the previous seven hour flight.
After asking the FA how he had arrived at this conclusion and been given the official line "the capt thinks so" in full view of the passengers I retreated to the lounge and had a few pints while waiting on the next flight which was on the competition.
The ground staff were as mystified as I was annoyed.
The romance of flight.