Motorbike Envy

How many years will it be before Barnaby, or any of the other boys, asks if they can ride a motorbike? How will I say NO, and secretly want to get back on a bike and zoom down the wiggly country lanes.  When they are all at school perhaps – I can hide a bike in the shed and get it out to blow the cobwebs away, with them being none the wiser. Nice dream