“Son, we have a couple of choices. You can follow your urges and the latest fad, in which you are likely to die a slow and painful death from AIDS, or we can follow God’s Word, in which case you can expect forgiveness and eternal life. Which do you think is a better choice?”
Are the two paths mutually incompatible? I mean, he’s going to die anyway. Just asking.
Instead of threatening the boy with AIDS, try using the disease of neuropathy instead.
That’ll turn him around quick and make him walk the straight and narrow.