would you mind if I asked how old your nephew is? while i think it's very important that everyone be taught sensitivity training, there is also an age with boys where they find anything to do with sexuality funny. i think it's because they can't experience it yet and don't understand it. boys are slower to mature than girls. so, at his age, you were probably already aware. this is an awkward situation for sure since you would like him to be aware and be more sensitive.

i hope things are going well in Las Vegas for you!