We've had lots of discussions about our parrots' vocabularies and how talkative they are (or aren't), but not as much about the funny sounds they imitate. There are two that Ralph does that come to mind right away. This afternoon I was chopping some celery and there seemed to be an echo in the room. I stopped chopping but the sound continued. Of course, that was Ralph.
Probably Ralph's favorite funny sound-- sounds, really-- are the creaky cupboard doors in the kitchen. There are three doors that squeak and creak, each slightly different from the others. Ralph can imitate all three. Most times when I take him into the kitchen, I have to open and close the three doors so he can do his imitations.
Bonnie does the zip noise too, whenever my husband picks up his backpack. I also noticed that when I am putting clothes away - which Bonnie enjoys 'supervising' - she was making a funny noise. Then I eventually realized it was the sound of the coat hangers sliding along the rail when I was moving them to put clothes on/off them. Too clever by far!