“I do not walk like a duck.”

“You point your feet out too much when you walk,” Will went on. He was busy polishing an apple on his shirtfront, and appeared not to notice Tessa glaring at him. “Camille walks delicately. Like a faun in the woods. Not like a duck.” “I do not walk like a duck.” “I like ducks,” Jem observed diplomatically. “Especially the ones in Hyde Park.” He glanced sideways at Will; both boys were sitting on the edge of the high table, their legs dangling over the side. “Remember when you tried to convince me to feed poultry pie to the mallards in the park to see if you could breed a race of cannibal ducks?” “They ate it too,” Will reminisced. “Bloodthirsty little beasts. Never trust a duck.”

“Gundar seemed to come to a decision. "Well, as my old mam used to say, if it looks like a duck and quacks like a duck and walks like a duck, it's probably a duck." "Very wise," Halt said. "And what exactly do your mother's words of wisdom have to do with this situation?" Gundar shrugged. "It looks like a channel. It's the right place for a channel. If I were digging one, this is where I'd dig a channel. So. . ." "So it's probably the channel?" Selethen said. Gundar grinned at him. "Either that or it's a duck.”

“That’s the tricky thing about love. It walks like a duck, quacks like a duck, and smells like a duck. But after you sleep with it a month or so, or get dumped at the altar by it, it starts smelling more like a skunk.”

“If it walks like a duck, quacks like a duck, and looks like a duck, it is a very unfortunate situation for the batting team. On the other side of the image, although being definitely unfortunatable for the batting team, it is most definitely a glorious silver lining for the bowling team.”

“You walk like a duck with a wet diaper on.'' Anita Blake Vampire Hunter”