Three frogs are sitting on a lily pad when along comes a cop who arrests them. They make their appearance in court and the judge calls the first frog to the stand.

"What's your name and what were you doing when you were arrested?"
"My name's Frog and I was just sitting on a lily pad blowing bubbles."

The judge calls the second frog to the stand.

"What's your name and what were you doing when you were arrested?"
"My name's Frog Frog and I was just sitting on a lily pad blowing bubbles."

The judge calls the third frog to the stand.

"Let me guess - your name's Frog and you were just sitting on a lily pad blowing bubbles."
"Nope, I'm Bubbles!"