A frog walks into a small bank called Wack's and approaches the owner, Patricia.

He says, "Hi, Patricia, my name is Ken Jagger, I'd like to take out a loan."

Patricia say, "Please, call me Patty. You wouldn't happen to be related to Mick Jagger would you?"

Ken responds, "Yes he's my father."

So Patricia tells him, "Well, if you want to take out a loan with us you'll need some collateral."

And Ken pulls out a little figurine of a dog playing with a ball and places it on the counter. Patricia inspects the figurine for awhile and is a bit confused. So she calls over a fellow employee to help sort it out.

Patricia tells the other employee, "This is Ken Jagger, he wanted to take out a loan and offered this as collateral, but I'm not sure what it is."

The other employee inspects the figurine for a few seconds and says, "It's a knick-knack Patty Wack, give the frog a loan! His old man's a Rolling Stone!"