Generate a new punchline based on this joke.
Q: Why did the duck go to the doctor?
A: To get some quack medicine.
Another possible punchline could be: "Because it had a bad case of the feather flu."
Complete the following task based on the instruction and optional input provided.### Instruction:
Generate a new punchline based on this joke.

### Input:
Q: Why did the duck go to the doctor?
A: To get some quack medicine.

### Output:
Another possible punchline could be: "Because it had a bad case of the feather flu."