A young boy comes home from school and says to his dad "Dad my homework is to find out the difference between potentially and realistically."
His dad replies "That's easy son, go ask your mother and sister if they would have sex with the mailman for two million dollars."
The boy leaves the room and when he returns he says "They both said yes."
"So," his dad explains, "Potentially
we are sitting on four million dollars, but Realistically
we're just living with a pair of whores."