Ralph Richardson and Gerald Flood in “Early Days” at the National Theatre.  David Storey wrote the play especially for Ralph, and he had considerable trouble learning the dialogue.  One notable moment of forgetfulness happened in a sequence with actress Rosemary Martin, playing his daughter, when the script has him refer to Gerald Flood, who plays his promiscuous son-in-law, as a “fetish.”  David Storey stood in the wings and watched Ralph trying to remember the line:

“And he began quivering, I thought he was going to have a heart attack, his neck got redder and redder, with his whole shoulder blade shaking, and he was towering above her as he struggled … ‘THE MAN IS LIKE A CROISSANT!’  And she had to repeat the line.  I went down afterwards and said, ‘That was a wonderful invention there, Ralph, fetish becoming a croissant.’  ‘Well, I think Gerald Flood’s face does look like a croissant.  I’ve always thought so.’”  (From John Miller’s bio of RR)