My clerical assistant in the library asked me today if I'd seen our stock of invisible mending tape, and did we need to order more? I told her that if the tape wasn't invisible then I could give her an answer!
Later she expressed concern about my cold. Having her revenge on my previous teasing, she said she hoped it wasn't equine flu (the current debacle threatening Australia's horse racing industry). I said, "Yeah, maybe it is equine flu, 'cos I'm feeling a little hoarse".
Maybe you just had to be there.