I told my lazy friend to tell our gym teacher she has bipedophobia once. Bipedo for the feet and phobia for fear. So fear of running....she did it and the teacher let her "try her best" and she just walked....
I said I was infected with a bacterial skin condition called Epidurmal Coningitus. I explained to him that, basically, my skin has a fungal sort of bacteria growing on it that causes these horrible, burning red blotches on it when inflamed. I told him they kind of feel like shingles, but instead, eat the skin over an extended period of time. It can also spread and infect the internal organs if contact with the mouth occurs frequently during flare-ups. If I have too much physical contact with another human being, it may transfer, and I was on the way over to the hospital, as another flare up was starting.
You should've seen the look on his face when the bus jerked and I bumped into him! xD
someone once saw me twitch in the bus..apparently he hadnt ever seen anyone twitch before -.-" so i got him to believe i was an alien and its a medical non-human condition. he believed me and told his friends .. poor fellow