I work at a hospital. I was talking with a coworker about her daughter's state XC race this weekend. A large (fat) male nurse commented that her time seemed pretty slow. We argued that it was a pretty good time (mid 18's for 5k xc). He goes on to tell us about how "back in the service everyone in my unit used to run 7 miles at 6 minute pace. we used to just run forever at 6 minute pace"
I have read these types of posts before, but at that moment I was unsure how to respond. I just ended up telling him "you must be confused." He protested while I walked away.
What is the best response in this situation?
I work with this nurse nearly every day and have now pissed him off. How do I convince him that he is probably confused without making him even more pissed off?