A Glitch In The Matrix

A customer approaches me.

Customer: “Excuse me? I’m looking for breathable long-sleeve shirts for walking or cycling.”

I explain where to find those. I can still see her walking away when another customer approaches me.

Another Customer: “Hi. I’m looking for breathable long-sleeve shirts for walking or cycling!”

I am staring, trying to hold back laughter.

Me: “Um…” 

The customer looks confused.

Me: “Oh, I’m sorry!”

I explain where to find the shirts. Both customers said the same sentence, word for word. They did not overhear each other; I’m quite sure about that.