THAT'S NOT MY FUCKING DOG

I WAS STANDING NEXT TO A PICKUP TRUCK WHILE WAITING TO CROSS THE STREET.
IN THE BED WAS A LARGE DOG. A YOUNG GUY, ABOUT 20 WALKS UP AND SAYS"DOES YOUR DOG BITE?'
NO MY DOG DOESN'T BITE, I REPLIED.
HE REACHES UP TO PET THE DOG AND IS BITTEN ON THE HAND.
AFTER FREEING HIMSELF, HE SAYS '
"YOU SAID YOUR DOG DOESN'T BITE. YOUR FUCKING DOG BIT ME."
I REPLIED "THAT'S NOT MY FUCKING DOG."