I remember waiting for tutor to start in my school once, and I was sitting on the floor, my friend as stood up beside me and said she felt sick, then lent over me and started retching, to which I leaped up, knocked 2 people out the way and legged it out the building, only to find she was just joking, but at the time she wasn't aware of my phobia so I forgave her, but she sure found it amusing