Stepping on Bubbles

Three ducks went into court. The judge called the first one to the stand.

"What is your name?" he asked.

"Quack." the duck answered.

"And why were you arrested?" the judge asked.

"I was stepping on bubbles." he answered.

The judge didn't see anything wrong with that, so he dismissed the duck and called up the next one.

"What's your name?" he asked.

"Quack," the duck answered.

"Why were you arrested?" the Judge asked.

"I was stepping on bubbles." the duck replied.

Again, the judge saw nothing offensive, so he called up the next duck.

"What's your name?? No wait, let me guess, Quack." he said.

"No," said the duck, "My name is Bubbles."