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.)