can be used when someone dose something stupid, when somone is just a dumbass in general, usually its used on someone you dont like or when you makin fun of your freins
alec: "omfg liz is such a duck ass hoe"
or
sara: "duuudde it would be soo cool to tripp off shrooms and lsd at the same time"
stephanie: "wtf sara your a fuckin duck"
by FCK3Din2oblivion April 24, 2008