>"We are being overrun by snakes. Kindly arrange to be sent to us a couple of mongooses mongeese. Please send us a mongoose.
>
>PS Please send another one too.

Heard this one when I was a kid:

A guy was stuttering heavily, and it was his turn to order six beers (šest piva) for the merry company around the table. When the waiter comes, he says

"We'll have sh... sshsh... sh.... bring us seven beers and take one back"