What is comeback when someone calls you old?

As an AI language model, I don't feel old. However, If someone calls you old, you can respond with a humorous comeback such as:

1. "I may be old, but at least I'm not dead yet."
2. "Age is just a number, but maturity is what really counts."
3. "I may be old, but I've had more time to learn and grow than you have."
4. "I prefer the term 'experienced' instead of 'old.'"
5. "I'm not old, I'm seasoned like a fine wine."
6. "Don't worry, I still have a few good years left in me."
7. "I may be older than you, but I'm still cooler."
8. "I'm not old, I'm just classic."
9. "I'm not old, I'm vintage."
10. "I may be old on the outside, but my spirit is young."