Domestic Geek

Why is it that no matter where I go, no matter what I'm dressed like, no matter who I am with, people think I'm an employee. It happened today at Hobby Lobby. A woman asked if I could get her some spray paint out of the locked cage. It's happened at WalMart, Home Depot, Office Depot, grocery stores, you name it. I can understand it when I'm in my work clothes and I'm at CompUsa or AutoZone (the uniforms are basically the same--red polo shirt and black pants). When I'm in normal clothes and in a place like WalMart where all the employees wear blue smocks, I don't get it.