Poor old Pavlov. Eventually every time he heard a bell ring he wanted to feed a dog.
SCENE: Interior. Day.
IN THE CORNER OF A SUBURBAN KITCHEN A DOG IS NOISILY MUNCHING THE FOOD IN HIS BOWL.
A TELEPHONE RINGS. THE DOG STOPS EATING AND CROSSES TO ANSWER PHONE:
DOG: Hello. Who is this?
VOICE ON PHONE: It’s Ivan
DOG: I told you not to ring me at mealtimes.