Must be fed up

Joe was 16 and finally got hold of his driver’s license. In order to celebrate the special day, the whole family went out to the driveway and climbed into the car to enjoy his first official drive. However, dad went to the back seat, where he sat right behind his boy. When Joe saw his dad he said "Dad, you must be
fed up of the front seat after teaching me how to drive all these days Right?" "Nope!", came the quick reply from the dad. "I'm going to sit back here and kick the back of your seat while you drive, just like you've been doing to me for the last sixteen years!"