...how to respect women. That no really does mean no even if the woman is 100% naked. And it is definitely no if she's drunk. And that it is always wrong to play grab-ass in a crowded space, on the street or in school. Or anywhere for that matter.
...that there are better ways to release anger than to harm or disrespect others, regardless of how they feel they've been harmed or disrespected.
...to love and care for the children they make, no matter who the child's mother is. Tell them if the woman is not fit to be the mother of their progeny then she's most certainly not worth laying down with, either.
...homosexuality or femininity is not a curse or a disease you can catch. They must learn to respect that all men are different, love different and live different.
...that a well-rounded education will make them an awesome human being. Don't just become a doctor or lawyer or business executive. Study dance and art and nature and "home economics"; to learn as much as they can for the rest of their lives and always be open to new theories while still maintaining a foundation of beliefs.
If I had a son, I'd make sure he knew all of that.
And how to get the hell out of the way when their woman is pissed off!
*smooches...hoping that all of you with sons are on the job*
these are the boys that will be courting my daughters, after all. I need these boys to be worthy of my jewels...