Have you ever had a pet that you could teach to make any noise so you taught it this really annoying noise and only realized afterwards that now you can never un-teach it and it's probably going to be this way forever and you wonder what you can possibly do to get rid of a cockatiel that knows dubstep?

On the other hand, you have to feel sorry for the bird too.  All it wanted to do was learn some fun noises for communication and now old people are constantly yelling at it for reasons that it can't possibly understand.