This one is rather old, but I still love it -
A frog goes into a bank and hops up to the counter. He coughs once or twice until the cashier, a young woman called Patricia Whack leans over the counter top and sees him. What can I do for you? she asks. The frog replies, I'd like to get a loan.
A loan? For a Frog? That's highly unusual. Do you even have any ID?
Don't need it, replies the frog, everyone knows who I am.
Who are you? she asks
Frog rolls his eyes and wearily replies "I'm Kermit - Kermit Jagger"
What? She asks, you mean you're Mick Jagger's son?
Yeah, that's him. That's my dad alright, replies the Frog. Anyway, how about that loan?
Well, says Patricia, how much did you want to borrow?
About 20,000 ought to do it, says the frog.
20,000???!! That's a lot of money, may I the purpose of the loan?
Oh, I thought I'd live it up a bit, maybe buy a small yacht, do a bit of cruising, says the frog.
I dun't know says Patricia, trying to think of some way of turning the frog down. Do you have any collateral?
Yeah, sure. says the frog, pulling a small, porcelain elephant, perfectly formed, from his pocket (don't tell me you didn't know frogs have pockets?).
Patty takes the elephant, looks at it carefully and says. well Kermit, I'll have to ask the manager about this. Mind if I show him the elephant?
Not at all, says Kermit.
Patty goes in to the manager:
There's a frog outside who says he's Kermit Jagger and wants a loan to buy a boat and gave me this as collateral, what is it anyway?
The manger looks at her and says -
"It's a knick-knack, Patty Whack, give the frog a loan. His old man's a Rolling Stone"