By Michael Stuttkus.
The best way I've found to deal with it in debate is to address it directly. Explain to the audience that it takes less time to spout nonsense than to refute it, explain that the refutations of the claims are widely available...
and then pick an example argument and absolutely savage it. Rip into it; tear it up in as much detail as possible until it looks utterly obvious that the man who presented such a mind numbingly stupid argument must be an utter moron.
Then challenge your opponent to stick to specifics and have a real debate, when he gallops off again, point out "he's doing it again!" chuckle lightly, then UTTERLY IMMOLATE one of his arguments.
All the while using rampant personification of concepts and lots of puns.