i do think it's rather sad that a 34 year old man(BIL) talks that way.
If he started drinking as a teen, that is where he is stuck. Yes, it is sad that an adult would say such a thing to your son. There is still no excuse though, the reason is he is a drunk teenager, but not an excuse.
My ex would say disgusting things sometimes, and when he saw the look on my face, he would say "man, i was only kidding!" really? about rape? yeah, that is so funny.
geez.
Beth