Sorry Guys, Fair Is Fair...
Because they are plugged into a genius.
They don't have enough time.
They don't stop for directions.
Because a vibrator can't mow the lawn.
Because they don't have penises to put them in.
They're both intended for children, but men usually end up playing with them.
Because their balls fall over their assholes and they vapor lock.
So they won't hump womens' legs during cocktail parties.
You always need a rough draft before the final copy.
So he can tell if he's coming or going.
Nobody knows, since it has never happened.