Wise old bird...........

An old woman in the queue at the supermarket is struggling with a huge bag of dog biscuits.
The woman behind helps her and ; stating the obvious says...

'Do you have a dog?'
The old lady replies....
'No, I am going back on the doggie diet. I carry a pocketful of dog biscuits and when I feel hungry ,I munch a couple. I had to give up the diet though. Last time I was on it,I finished up in intensive care'
'Oh dear', said the woman,'did the dog biscuits poison you?'
'No' replied the old girl, 'I stepped on to the road, to sniff an Irish Setters arse and a car hit me!