Somone with a small penis. Their Penis is therefore refered to as a stub. Being A stubby Goo often runs in the family. They also often try to act tough in defense to bieng called a stubby goo.
Guy 1: "Yo, Did You See andrew in the locker room today?"
Guy 2: "Yea, hes got such a stub."
Guy 1: "Haha, I heard his brother's got one too."
Andrew: "Hey, are you guys calling me a stubby Goo? I should Kick your asses!"
Andrew's Mom: "Come on Andrew, time to come home. It's Almost your bed time."
Guy 1 & Guy 2: "Hahahahhahahaah"