OK, Mine is pretty simple. My name is Mike Trump. I have been known as Trumpy since I started school in the 70's. It stuck and there you go. It is a convention here in NZ that if you have a one syllablle((sp??) surname, you instantly get a y at the end of it. It is an affectionate name. I have however been referred to throughout my Fire Service career as <Insert Rank> Trump. Not unlike the military.