A Joke

For some reason this joke has been stuck in my head ever since I first recieved it a long while ago. I just recieved it again (you know how junk email gets about) so I've posted it here for y'all to read.

THE FROG AT THE BANK

A frog goes into a bank and approaches the teller. He can see from her
nameplate that her name is Patricia Whack.
"Miss Whack, I'd like to get a $30,000 loan to take a holiday."
Patty looks at the frog in disbelief and asks his name. The frog says
his name is Kermit Jagger, his dad is Mick Jagger, and that it's okay,
he knows the bank manager.
Patty explains that he will need to secure the loan with some
collateral.
The frog says, "Sure. I have this," and produces a tiny porcelain
elephant, about an inch tall, bright pink and perfectly formed. Very
confused, Patty explains that she'll have to consult with the bank
manager and disappears into a back office.
She finds the manager and says, "There's a frog called Kermit Jagger
out there who claims to know you and wants to borrow $30,000, and he
wants to use this as collateral."
She holds up the tiny pink elephant. "I mean, what in the world is
this?"


The bank manager looks back at her and says...
"It's a knickknack, Patty Whack. Give the frog a loan. His old man's a
Rolling Stone."