Well certainly not talking about the "nitty gritty" :-) but acknowledging that some boys like boys, some boys like girls, etc. And that some kids will have two mothers, other a mother and a father - no information about what Mom & Mom, or Mom & Dad, are doing in the bedroom. I remember as early as 7 years old having a sort of crush on another boy - knowing that I was NOT the only boy in the world who felt that way would've been nice.