The Blonde and the Cow

A blond city girl named Amy marries a Northern Territory cattle station owner
One morning, on his way out to check on the cows, the stockman says to Amy,  

'The insemination man is coming over to impregnate one of our cows today, so I drove a nail into the 2 by 4 just above where the cow's stall is in the barn. Please show him where the cow is when he gets here, OK?'

The stockman leaves for the outback paddocks. After a while, the artificial insemination man arrives and knocks on the front door.

Amy takes him down to the barn. They walk along the row of cows and when

Amy sees the nail, she tells him, 'This is the one right here.'

The man, assuming he is dealing with an airhead blonde, asks, 'Tell me lady, 'cause I'm dying to know; how would YOU know that this is the right cow to be bred?'

'That's simple," she said. "By the nail that's over its stall,' she explains very confidently.
Laughing rudely at her, the man says, 'And what, pray tell, is the nail for?'

The blonde turns to walk away and says sweetly over her shoulder,
'I guess it's to hang your pants on.'

( It's nice to see a blond winning once in awhile.)