Once at a supply house back in 84 at a young age I told this really big fat guy off and what I thought of him. That was after 20 minutes of him arguing demanding that we carried this rediculous fixture part. I even guided him through all our stock and he still wasn't convinced. After standing there letting the guy yell and blow may hair backwards, I had flipped. We dealt with electricians ever day that spent good money, not one of them ever treated me like this guy.