A person (usually a man) who is totally obsessed with everything to do with transformers - the movie, the action figures ect. - that they constantly blow off their friends for the sake of watching the movie for the 23rd time or playing the video game, maybe even just playing with their optimus prime action figure while trying to work out another excuse for not coming to the movies. These people have a disease called transformosis,of which the symtoms are pasty skin, no girlfriend and only having a shower once a week because there isnt enough time to be clean when you could be playing with transformers.
Ted: hey jake, have you seen joe around?
Jake: nope, he totally blew me off for transformers AGAIN!
Ted: wow, what a transformerphile.
Jake: yeah i think he has a serious case of transformosis, and he stinks!
What people who try to change everything and everyone must think they are.
Start by concerning yourself with what you want to change about yourself if you're going to change anything at all (most of the world should be good enough the way it is without your need to do something to make it what you think it should be, or make people what you think they should be). You're not a transformer.