I did the whole "adult" thing, tried to present the facts, gave my honest opinion on his situation, and tried to be rational, reasonable, and responsible.
But of course, I'm a clown with an oversized coconut head. So I started making jokes about halfway through, to break the serious tone. And then I said something that, I think, is probably the funniest (and maybe rudest) thing I've ever said:
Remember, a good woman is hard to come by... and even harder to come on.
I'm pretty sure that's the best sex advice any half-brother can give, wouldn't you agree?