Bitch, you aren't always right. Shut up, and listen.
I entered a checkout lane to get gum, and turned to self-checkout, but the lady in line asked me "what do you have". Me: "gum". Lady: "...go ahead". Then the cashier refused to check me out b/c I had been "rude" and "should've asked first". Well the lady told me to go, BUT then the lady said I "burst in line" The cashier told me to go to customer service. If you hadn't dismissed me you'd know that I had no intentions of budging or being rude.