a boy split between two conflicting personalities: 1) a good, mama's boy who frowns upon perversity and homosexual jokes. innocently ignorant and oblivious. 2) a spasmatic, sexual deviant with the mind of hannibal lector and pee wee herman rolled into one.
However, the term "good boy" more commonly refers to the latter, more controversial side.
verb form: "To good boy" - to mask sexual deviancy behind a facade of ignorance and innocence.