From Have His Carcase, Ch. XII: the dreaded, inescapable inferiority complex.
Silence for a few moments. Harriet felt that Wimsey ought to be saying, "How well you dance." Since he did not say it, she became convinced that she was dancing like a wax doll with sawdust legs. Wimsey had never danced with her, never held her in his arms before. It should have been an epoch-making moment for him. But his mind appeared to be concentrated upon the dull personality of an East Anglian farmer. She fell a victim to an inferiority complex, and tripped over her partner's feet.
"Sorry," said Wimsey, accepting responsibility like a gentleman.
"It's my fault," said Harriet. "I'm a rotten dancer. Don't bother about me. Let's stop. You haven't got to be polite to me, you know."
Worse and worse. She was being peevish and egotistical. Wimsey glanced down at her in surprise and then suddenly smiled.
"Darling, if you danced like an elderly elephant with arthritis, I would dance the sun and moon into the sea with you. I have waited a thousand years to see you dance in that frock."
"Idiot!" said Harriet.