Mine was the first time i tried to buy a SCSI drive in the US. The sales person didn't even understand what i meant, when i said "es see es i". Then he pronounced "sceuzy" and i was amazed :))

I once requested the "Wi-fi" key in a hotel, at St. Malo, France. The receptionist gave me a weird look and, after I explained myself, said «Oh, le "wee-fee"».