No. Defending oneself to anyone was never offending in the first place. If it's an elderly, that elderly should've been able to understand you as someone younger than him/her. Also the right choices of words is a must when talking to them. Let respect flow as you defend yourself.
Answers & Comments
Answer:
No, it's not.
Explanation:
As long as you are right and you are defending yourself in a respectful way, it's not offensive.
Answer:
No. Defending oneself to anyone was never offending in the first place. If it's an elderly, that elderly should've been able to understand you as someone younger than him/her. Also the right choices of words is a must when talking to them. Let respect flow as you defend yourself.