1. An insult directed at an idiot who is generally annoying and is always full of shit, e.g stuffed like a duck.
2. A person who eats chips all the time, but then has no room for actual meals.
"ugh! Stop being such a stuffed duck, man!"
"God you eat like a stuffed duck!"
The act of stuffing toilet paper or tissue paper in ur bunghole when u hav wet farts or the shits.
Bro I'm totally stuffing the duck right now.