A boy comes home from school and sits down beside his dad.
"Dad, whats a cunt"?
The dad spits his beer all over the room, gets up and says to his son; "Follow me".
The boy follows his dad up stairs to the master bedroom. Laying naked, fast asleep on the bed is the boys Mother.
The Dad points and says; "See that triangular dark patch between her legs? Thats a Vagina, your Mothers a cunt"!