The Mystery of the Moving Package

It’s 11:30 A.M. and Bob just arrived at his third customer’s house.  It’s the middle of spring and all Bob has to do is clear some roots from a pipe. “This should be an easy one” Bob though. Just as Bob finished feeding the camera line down the pipe, a Tastey Pastry van pulled up next door. The delivery man left a package of a dozen cupcakes on the front step, rang the doorbell and left. A couple minutes later he notices that the package is moving off the door step and towards the street. Bob immediately gets up and starts to run toward the package when all of a sudden, he trips on the cord and falls flat on his face. He gets up to put the package on the doorstep then he goes back to work. As he’s working he here’s a thud. He turns to look towards the noise and he sees that the package is half way to the street again. He runs to lift the box and he notices that there are a group of ants underneath it. As he’s walking the box to the doorstep the neighbor walks up to him from behind and says “is that package for me?” “Yes” Bob says as he hands the neighbor the package. Once the neighbor was inside Bob says “HA! Take that ants” when he realizes that the ants and his toolbox are already across the street. “Hay, get back here right now!” Bob says as the chase begins.