But you are right on one thing, he does love to do things to get a rise out of me.
Well, you might enjoy your visits here. No matter what he spouts off there are those here who will enjoy arguing over it. Heck, we argue over almost anything.
There are also some here who have significant expertise in many areas and/or a willingness to look it up and dig in. You have a team of allies that will enjoy helping you dissect almost anything put forward.
Maybe it works already? He's been asked for more details on his platypus position and ..... nothing there. Just, as you say, a smart assed comment. There is nothing confusing there for evolutionary theory and only some interesting questions about the actual evolution of this particular beastie.
You can search the web or the bookstore for the best of the anti-evolutionary arguments. There is little or nothing new and no real meat. It's fun to hold people's feet to the fire.