Best definition
Wildaddy
A Wildaddy is a male who thinks they are somewhat gangsta but just come off as a douche. They are

terrified of arachnids and automatically squeel and trip over at the sight of them.
They are terrible at doing sound effects and think that they are mature for saving their money.

Look at that kid beat boxing and trying to make it as the next big rapper, he is such a Wildaddy.