The name comes from the inspiration behind Sloth Fratelli from the film "The Goonies". The actor (Not widely known, was from Yorkshire, England) decided to play his role on the basis of an acquaintance he knew while growing up, namely David Ian Wright. It is not thought to be offensive, more comical as the two still remain acquaintances to this day.
"Look at that Dave Wright, he's as big as Chubby Checker"
Or "He's as much of a stud as a Dave Wright"