I don't argue with fat people. I don't argue with adipose leeches. Ever.  I'll give them orders, bad looks, and answer questions, to a certain limit, but never argue. Why? The same reason that I never argue with stupid people. It's akin to tuning your radio to the most childish, idiotic station there is, and arguing into the speaker. It's on send only, and you end up looking like a crazy moron in the process. They're beneath two way interaction. Don't bother.