1. To agree with someone or something.
2. "For sure."
3. "Fuck yeah, dude!"
Jacob asks, "David, would you like to play a football with me?" David responds, "Fo'Gucci mah nigga!"
The new way to greet a white person in a polite and friendly way in the 21st century.
Douglas meets his friend, Jacob, who he hasn't seen in two days. Getting all excited, Douglas, who is about 30 feet away from him, screams, "AYYYEEE MA WIGGA!"