I've done merchandising too and demos and they DO get all witchy and crabby if you tell them that you don't work there...I once went into Sears to look for something and I had my Zany Brainy T-shirt on because I was at lunch and it was right next door in the mall. Some lunkhead comes over and asks me for help. I told her nicely that I didn't work there; that my name tag and my shirt says ZanyBrainy(It has a guy with glasses in rainbow colours on it) and that she should go to the customer service counter for help...she threatened to go to the store manager because I wasn't a helpful salesperson...It WASN'T even MY STORE!!!Once she started yelling, I walked quickly away...