A Flashing Light-Bulb Moment

(I work for a major DIY store and often work on the returns desk. One day a customer comes in carrying a bag from one of our competitors. From it he pulls a box of Christmas tree lights.)

Customer: “I’ve bought these lights, and they keep flashing. I don’t want them to flash; I want them to stay on all the time.”

(I look at the box of lights and notice they clearly have the name of the competitor on them.)

Me: “I’ll just stop you there, sir. These lights were bought at [Competitor] and this is [My Store].”

(The customer looks at his lights, looks at me and my uniform, and finally the light bulb goes on.)

Customer: “Bloody h***, I’ve just come from there!”