Hey Cow!

As recently as last weekend I went on a road trip to a wild foods festival located on the West coast of the South Island. I went with a good group of friends, one of whom, Heidi, taught the rest of us how to play "Hey Cow". The way to play is, you spot an oncoming herd of cows in a field, roll down your window and yell "HEYYYY COOOOWWW" as loud as you possibly can. Then you count the number of cow's that turned to look at you. Whoever gets the most cows wins.
Heidi demonstrated the game for us, her hollar rewarded with 6 out of 12 bored looking cow faces.
What a great game! It was my turn next. I was nervous. What if they didn't look? I cleared my throat in preparation and I rolled down the window. "HEy cow?" I asked, apprehensive.
2 cows looked up. "Good effort" Heidi said sympathetically. "No, no, no, that was crap! You didn't even try!" cried Roger. The others agreed, it was a poor effort. Oh well.
"Let's do it all at once and see if we can get all of them to look" Heidi Suggested. We rolled down the windows and everyone, even the driver, leaned over to get a closer range in which to yell.
An unsuspecting herd came up just after the hill. "HEY COW!" We screamed in unison.
one
two, three, four cow heads turned. Six, Seven, Eight Ni...Oh!...uh.
A rather rotund woman stood amongst the cows in the field. Her glare was not pretty.
"Er..." Roger said. The rest of the car was silently suprised and embarassed.

The woman standing in the field watched the car drive on down the highway till it was out of sight. "Lunatic kids" .