Here's one from Newfoundland. (No, I'm not a Newfie).

A man was working at a construction site and was up on a ladder. He drops his screwdriver. He climbs down to get it and there is a little boy standing there. He says: "You know, my Daddy wouldn't have to climb down to get that screwdriver. Do you want to know why?" The man says: "Why?" The little boy says "My Daddy would have two screwdrivers." The man tells the kid not to bother him. He's up on the ladder and drops his pliers. He climbs down and the little boy says that his Daddy wouldn't have to climb down, because he would have two screwdrivers. The man tells him to not to bother him. It was close to lunch time and the man had to use the lavatory. He goes behind the bush and when he comes out, he sees the little boy standing there. He says: "I suppose your Daddy's got two of these as well." The little boy replies: "No, but he's got one twice as big."