Since you brought it up...
Many years ago I had a attractive Namibian student working with me. She was studying at university in South African, but on year's training placement at the company I was working for in the UK. One morning, she came up to my desk and the following conversation took place:
Me: "Hello *******" (she shall remain nameless).
Her: "Hello ***, can you give me a stiffy please?".
A colleague promptly spits tea all over his keyboard and monitor.
Me: "A stiffy?"
Her: "Yes please, one of those" (pointing to a 3.5" floppy).
Her: "Those are stiffies, 5.25" are floppies."
Her: "What did you think I meant?"
Silence, except for choking noises from the next desk...