Letting off a little steam

There is someone I don't like. Someone who thinks they and what they do are better than everyone else and what everyone else does. This person DRIVES. ME. INSANE. This afternoon while I was working on getting my Bb is for Baseball book out to the masses, this person approaches me and says "It looks like you aren't doing anything important." Could have punched this person in the face right then and there. Then of course without asking what I was doing, this person asks me to do something for them. I did it. BUT, if I did it the way they wanted me to do it, I'll never tell.