sunshine boy

Sure . . . i would just say that you want to be careful that it doesn't sound sarcastic. It would be an acceptable term to describe someone with a positive attitude.

I suppose so, but you may want to reflect on the fact that "The Sunshine Boy" is a documentary film about a mother and her autistic son, and that many hearers/readers of your phrase may therefore get a different meaning from the one you intend.

In any case, even ignoring the above, the phrase "sunshine boy" suggests -- to me -- a child or male adult in a perpetual state of optimistic bliss, a kind of male Pollyanna, who is possibly somewhat "special" in some way. Eg Down's Syndrome, autism, etc.

"John is a sunshine boy" makes no sense.

"John has a sunny attitude" is better.

It is perfectly good colloquial English. It suggests a boy whose demeanour always reminds one of sunshine, that is, a cheerful happy boy.

It may be significant to note that calling a male "sunshine" can have a homosexual connotation.

horsie poop

That's interesting, sunshine.

I would have no idea what would be meant by "sunshine boy" if I heard it, so I disagree with the majority here. It could mean he likes being outside in the sun, for all that matters. To me, it's an obscure phrase.

I agree with those saying that "sunshine boy" would have somewhat negative conotations like that of a "male Pollyanna." I wouldn't use this particular expression.

In my city, back in the day.. A local paper used to have a daily 'sunshine boy and girl" in the paper. Akin to the pinup girl in the London Sun.

Well I don't believe that sunshine boy would be the correct word to use and here is why: the definition of a sunshine boy by the urban dictionary is "The kind of all singing-all dancing guy who appears to be loving, caring and seems to be nothing but perfect, ends up stealing your girlfriend just so he could **** her. They stay together for how ever long sunshine-boy can stay perfect. Which isnt usually very long." So this wouldn't be a possitive description of someone.