The usual tone I encounter is an accusatory one. Since I am young and working a night shift, that simply don't care about anything. People make that initial misconception and it carries over to the products on display. Then they proceed to tell me how when they were "kneehigh to a grasshopper," they grew watermelons, cantaloupe, head lettuce, etc. and it never looked that "crappy". Why do customers incorrectly assume that because they grew a watermelon in their back yard it automatically makes them a farmer. "Oh, I grew up on a farm..." That's the most popular phrase I hear in my line of work. Just because you grew cucumbers and tomatoes in your back yard doesn't mean you're the Green Grocer. God that annoys me. You would think that a customer would gladly appreciate advise you can give them, but instead they see it as an opportunity for an argument to commense. The experience is similar when I worked for a butcher. Once in a great while, when I do encounter a customer with the decency to listen to what I have to say, I thank them for the opportunity to educate them on whatever it was they asked about.