a duby is most likely a play on someone’s name whether it be first middle or last. It occurs naturally if the person if funny in nature and ‘duby’ can be used rather than full name.
“you really hit that shit at the club last night, Duby”
A very power entity with massive biceps and legs as strong as an Ox. He has plenty of heterosexual intercourse pretty much daily. His semen is also very high in protein. If you get him mad you better hope he isn’t feeling horny, because he will take it out on you or ya mama
Guy 1: Ayo man, who’s El Duby?
Guy 2: I don’t know much about El Duby, all I know that he has plenty of sex