“If it looks like a duck and sounds like a duck, it could be a really ugly swan.”
“If it looks like a duck, quacks like a duck, it's a duck!”
“If it looks like a duck and quacks likes a duck, it's a duck, right?”
“His own image; no longer a dark, gray bird, ugly and disagreeable to look at, but a graceful and beautiful swan. To be born in a duck's nest, in a farmyard, is of no consequence to a bird, if it is hatched from a swan's egg.”
“I don't have ugly ducklings turning into swans in my stories. I have ugly ducklings turning into confident ducks.”
“You ever hear that expression 'If it looks like a duck and it quacks like a duck, it's probably a duck'?”