A crazy loud african man. A "Mugisha" usually takes offense to many things but really isn't offended. Calls people things like "dickmouth" then expects them to let him use their computer. If you are considered a "Mugisha" people generally like you but usually want you to stfu and punch yourself in the face. Dickmouth.
"Woah! That African is such a....Mugisha!"
"Dude...I feel like a Mugisha"
"So um...today I was sitting with a couple of friends talking about the weather until Tony just got up and yelled random obscenities...then threw his lunch at Jared's face...what a crazy Mugisha"