My favorite so far:
"In my experience, a lot of what the libertarian platform stands for makes a lot of sense and I whole-heartedly agree with. The problem is, the parts that I don't agree with seem absolutely batshit insane (i.e. privatizing sidewalks? WTF?). So my question is basically, do I find myself agreeing with you because I'm a little crazy or disagreeing with you because you're a little crazy."