Assuming most of us have a job and work directly with customers (retail seller, customer service, tech support) our direct contact with the customer results in sometimes very strange events. This thread is for all the weird stories, the occasional derp customer or some crazy story from your everyday job.
I'll kick it off:
So I work at this big retail store called Fnac in Brazil (kinda like Best Buy, we work with electronics, books, dvds, and music; If you were to walk into my store it would be the closest thing you'd have to Best Buy here in Brazil) and started off as a seller but was