It's one of the beauty industry's unflappable rules, and it applies no matter what time of year it is.
Here, as in all Indy movies, the hero, played as always by Harrison Ford at his Male Lead best, is amiable, unflappable and indominable, although tried to the limits of his patience by a tag-along nightclub singer.
Inimitably unflappable, David Niven turned to the audience and candidly remarked, "Isn't it fascinating to think that the only laugh that man will probably ever get in his life was when he stripped off to show his shortcomings."
"I am where I belong," he said with his unflappable confidence.
He jabbed him in the arm, entertained by his unflappable friend's discomfort.