Old Mrs. Davidson's dishwasher had gone on the blink, so she called
out a repairman. As she had to go to work the next day, Mrs. Davidson
said: "I'll leave you a key under the mat. Fix the dishwasher and leave
the bill. I'll send you a cheque. And don't worry about my pet Doberman.
He won't bother you. But whatever you do, don't talk to my parrot under
any circumstances."
The next morning when the repairman arrived at Mrs. Davidson's flat,
he discovered the biggest meanest-looking Doberman he'd ever seen. But,
as Mrs. Davidson had said, the dog just lay sprawled out on his bed and
didn't bother him. However, the parrot drove the man mad cursing and
screeching all day long.
Finally, he couldn't stand it anymore. "Shut up, you stupid, ugly
bird," yelled the man.
At which the parrot replied: "Get him, Spike."