Potential vs Reality

A kid comes home from school and asks his dad to help him with his
homework. He has to find out the difference between 'potential' and
'reality'.

The kids dad says, "Go ask your sister if she'll have sex with the
garbo for a million bucks!".

"I can't ask her that!", exclaimed the kid. "Just go and do it!", his
old man insists.

The kid comes back a few minutes later, wide eyed, "She said yes dad!"
"Now, go ask your mother if she'll have sex with the garbo for a
million bucks!" "I can't ask Mum that!", says the kid. "Just do
it!!!", replies the father.

The kid disappears and returns, "She says yes!". The father smiles,
"Now, go and ask your brother if he'll have sex with the garbo for a
million bucks!".

The kid asks his brother, and returns, "Geez Dad! He said yes too!".

"Well, now you see the difference son", explains his father. "You see,
'potentially' we have three million dollars in this family, but in
'reality' we have two sluts and a poofter.