while we're waiting with deformed breath, here's one:

An old woman is expecting the plumber to come at ten o'clock. Ten o'clock comes and goes; no plumber; eleven o'clock, twelve o'clock, one o'clock; no plumber.

She concludes he isn't coming, and goes out to do some errands. While she is out, naturally, the plumber arrives.

He knocks on the door; the lady's parrot, who is in a cage by the door, says, "Who is it?"

He replies, "It's the plumber."

Thinking he's talking to the woman, he waits for her to come and let him in. When this doesn't happen he knocks again, and again the parrot says, "Who is it?"

He says, "It's the plumber!"

He waits, and again no one comes to let him in. He knocks again, and again the parrot says, "Who is it?"

He thinks maybe the woman is hard of hearing so he shouts, "It's the plumber!!!"

Again he waits; again she doesn't come; again he knocks; again the parrot says, "Who is it?"

"IT'S THE PLUMBER!!!!" he screams, flying into a rage; he takes his biggest pipe wrench to the door and bashes it in, sees the parrot in the cage next to the door and, in an apoplectic fit, he suffers a massive heart attack and he falls dead in the doorway.

The old woman comes home from her errands, only to see the door bashed in and a corpse lying in the doorway, "A dead body!" she exclaims, "Who is it?!"

The parrot replies, "It's the plumber."