I met a very old parrot in a pet shop. I asked about it - "Estate sale" said the clerk. I just went back and stood companionably beside the cage for a while. When I had to leave, I said "Sorry, bro!" The parrot looked at me, then in a perfect imitation of a child's voice said "Polly want a cracker? Ha ha ha ha ha ha" in the most sarcastic tone possible.

Heartbreaking.