Just looked through this and it seems too much hard work for this to be fake, with the dad and everything, but every post is too fucking retarded to be real, i think. Also, the friends all seem to be from the same area and seem legit, surely if this guy is a character, he would have random friend requests from all over the place.
I think some funny fucker found this dudes phone, probably outside a fast food joint, and found all the retarded pics and a few texts revealing the name etc. Then they sign up to facebook, add as many people from his area as possible, then proceed to post his pics up providing retarded stories behind each one.
It's the only explanation i can think of, even though i would love to know this guy really exists.