In all musicals, any and all random members of the public know all the steps and all the words in any given dance routine

If the leading man should lead the heroine onto a dance floor, the public will always move to the side and look on with adoration

The heroine never wears trainers or boots and always wears floaty dresses that display perfectly matching kecks.

Staircases are for dancing up and down only

No matter how much energy is put into a song and dance routine, the next person to deliver a line does it without panting for breath

As in the above scenario, even in a desert, no-one gets sweaty.

Gotta love 'em, though.....well, I do anyway.