Someone who is
dumb an don't know what they are talking about.Or someone who says something that makes no sense very often.it can even be someone who is
smart but say something with out thinking about what they're asking."duck"is used to call someone
dumb or to nicely let someone know they said something stupid
Michael:what's 9 multiplied by 7
Kenya:Bruh you a duck
Micheal:wait what did I ask
Kenya:what's 9 multiplied by 7
Micheal:oh that's 63 now I feel stupid *laughs*