I think we all know those people that think they know everything that there is to know. My sisters boyfriend irritates me more than any other person has ever. I tend to get along with everyone that I meet, just not this guy. He will act like he knows more than everyone, regardless of the subject in matter. He knows more, done more, and better at it than anyone. When I have to be in the same room with him, I grit my teeth so hard. lol This guy even tries to tell us all his Dad invented caller id... really? LOL My sister believes everything he says!