Taken from the movie "Gattaca". The term is associated with a detested segment of society; one of those who refuses to play the hand that he was dealt. Most commonly known as a borrowed ladder, or a de-gene-erate.
We have a borrowed ladder who has infiltrated Gattaca and has been mascarading as one of it employees.
8 out 10 Proctologists agree that a duck arse is commonly associated with woman and are usually larger than a Booty but smaller than a Toyota Echo. Symptoms include an abnormaly upright strutting woman with a large bulbus ass pertruding from spandex or stretched jogging pants.
Yo that chick heading out for a dip is going to displace some serious H2O with that DUCK ARSE, ya heard!