I remember one time I had a stomach bug and had thrown up several time but when my mum dropped me off at my paternal grandparents, she forgot to tell my dad about it so he was convinced that it was all in my head. First he told me that my grandmother was a nurse (which she actually had been during the war) and she could tell that I wasn't sick. When I held out he told me that my grandfather had x-ray vision and could see into my stomach to say that it was all okay in there. Needless to say, I wasn't convinced.
If I was smarter, I would have thrown up on him, just to prove my point.
