"F--- you," McCain told Cornyn, in front of about 40 witnesses.

It was another instance of the Republican presidential candidate losing his temper, another instance where, as POW-MIA activist Carol Hrdlicka put it, "It's his way or no way."

There's a lengthy list of similar outbursts through the years: McCain pushing a woman in a wheelchair, trying to get an Arizona Republican aide fired from three different jobs, berating a young GOP activist on the night of his own 1986 Senate election and many more.