three ducks were in a prison cell

A police man walked in their cell and started interrogating:

whats your name and what did u do? the policeman asked the first duck.
the duck said: My name is Kvack Kvack and I blew bubbles in the park.

He watch the duck confused and walked up to the second duck and asked: Whats your name and what did u do?
The second duck said: My name is Kvack Kvack Kvack and I blew bubbles in the park

The policeman was even more confused when he walked up to the third duck
Wait, wait let me guess: said the policeman, your name is Kvack Kvack Kvack Kvack and you blew bubbles in the park, right?.
No, said the duck, My name is Bubbles