I'd also like to reply to Mark129er's original post...
Yes, I understand how frustrating it can be to deal with "ill-informed" people, however we must remember that MOST people don't really know anything about snakes, just old pet-store "folk-lore", lol!
Maybe the guy wasn't ill informed and he just doesn't want a fat overfed snake, as Ontario Herper and others have suggested. Maybe further discussion with the person could have been educational to either person, instead of walking off wanting to "vomit with rage". Maybe this person has a lot of experience and knowledge to share. Just because it differs from the care sheets, or breeders ("breeder folk-lore") in a hurry to raise their animals to breeding size, doesn't mean that his methods are wrong.