Potential and reality

Little Jimmy is at school and the teacher says "your homework is to work out
the difference between potential and reality".Jimmy goes home and has no idea
,so he asks his dad.His dad thinks about it and tells Jimmy to ask his mum if
she would sleep with Robert Redford for a million quid.He asks his mum and she
says"don`t tell your dad ,but yes i would for a million quid." Jimmy goes and
tells his dad all this and his dad says "Go and ask your little sister if she
would sleep with Robert Redford for a million quid" he asks his sister and she
says "don`t tell your dad but yes , i would for a million quid" Jimmy goes and
tells his dad this and his dad says "There you go Jimmy , thats the difference
between potential and reality.Potentially we`re sitting on two million quid, in
reality we`re living with a couple of slags".