The quickest way to win an argument with an evolutionist is to get them to admit they come from the animal kingdom according to their beliefs -- and that's what it is, a belief --. And they will admit that, they have no shame about saying: "Yeah, I believe I come from the animal kingdom."
Well, when you get them to admit that you can then say: "Okay, as a creationist I can no longer take you seriously. And even as an evolutionist I wouldn't be able to take you seriously cause well, I don't take animals seriously when they have anything to say. And, well, since you believe you're from the animal kingdom, I have no reason to take you seriously. You can try and rationalize that all you want, and say "Well, I'm an modified monkey" or "I'm an evolved animal, with intelligence", well, that's your own oppinion, which is the oppinion of a modified animal. So, I can't take you seriously."
Conversation's over.