Dear Pastor Tim,
I read the letter you mentioned (http://www.cybersaltshaker.org/content/view/77/62/). Interesting. I like your well stated reply.
With the Popeye "I yam what I yam," quote, I was expecting a "vegetable rights activist" writing in claiming the quote is somehow defaming relatives of the sweet potato. (No relation to another Popeye comics character, Sweet Pea.) After all, several US state do have laws against "produce disparagement". They are states where you "don't 'disparagus' the asparagus".