Richard Olivier, the son of Sir Laurence Olivier and Joan Plowright was only a little boy when, on the front at Brighton, he was confronted by the sight of two dogs mating.
The lad turned to Noel Coward, who was the Olivier's house guest, and asked, "What are they doing, Uncle Noel?"
"The one in front is blind" said Coward, unperturbed, "and the one behind is being very very sweet and pushing him all the way to St. Dunstan's."