noun. A delightful penguin-like non-strut, often foreshadowing a future full of equally delightful don't-drop-the-soap scenarios.
Real citation: "Cheney's Perp-Waddle"
(Oct. 25, 2005, Wonkette, http://www.wonkette.com/politics/dick-cheney/cheneys-perpwaddle-132987.php)
Made-up citation: "Chuck Berry is a master of the duck walk and the penguiny perp-waddle, though a body search reveals few feathers."