The 80 year old man

There's a quite elderly man who joins us every Monday for the Burlington Rotary club meeting, hosted at the Wyndham. After this week's meeting, I saw the man sitting outside on the curb, so I found a banquet chair and brought it out to him, and helped him up into it. He thanked me, and then replied;

"Son, don't ever get over 80."
"Ok, sir, I'll do my best on that one."
"Don't even let your wife permit it to happen!"
"Well, sir I have a pretty bad diet already - I almost never eat vegetables"
"Oh. Good, you should be fine then."