Physically, the show has two core comic tools. The first is what Rob McClure can do with his Doubtfire get-up. He plays a broom like a guitar! He sets fire to his rubber bosom! He breakdances in a fitnesswear parade for Miranda's new line! McClure himself is an antic type, elfin and prone to sudden grace and funny squawks: Imagine Kermit the Frog with incredible vocal control. Putting him inside a bulky padded costume means that we're seeing the two layers spinning in opposite directions: In the show's best dance number - Mrs. Doubtfire learns to cook from a parade of tap-dancing YouTube chefs - McClure hikes up his dress and you see the frenzied duck-on-a-pond paddle that's going on beneath his skirt. The second comic tool is more broadly applicable: farce.