Duck

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*