Lets see,...
"Duffy", 'cause of my propensity to duff one off the tee.
So I'm Duffy, man. So that's what you call me. You know, that or, uh, His Duffness, or uh, Duffer, or El Dufferino if you're not into the whole brevity thing. Or for street cred The Hip-Hop Hippotamus(because my lyrics are...