"woof woof, woof woof woof, woof woof"

A dog walks into the post office and asks how much a telegram costs. The guy says "7 words, $1.50."
So the dog says "o.k. send this - woof woof, woof woof woof, woof woof"
the guy says, "you know, for an extra 20 cents you can send 3 more woofs."
The dog says "but that wouldn't make any sense."

A cat walks into the post office and asks how much a telegram costs. The guy says "7 words, $1.50."
So the cat says "OK, send this - meow meow, meow, meow meow, meow meow."
The guy says, "you know, for an extra 20 cents you can send 3 more meows."
The cat stares at him and says, "the dog warned me about you."