ATLANTA (CNN) -- So what does a 70-year-old presidential candidate facing questions about his age do on Mother's Day?

Why, he shows off his 95-year-old mom, of course.

Perhaps trying to say you're never too old to run for the White House or to listen to your mother, Sen. John McCain, R-Arizona, brought along his mother Roberta Sunday to an appearance on NBC's "Meet the Press."

She was at his side as he talked to reporters outside NBC's Washington bureau following the GOP presidential candidate's interview.

"Since this is Mothers' Day, I brought my mother with me to 'Meet the Press,'" McCain told reporters. "She is 95 years young, and is my most constant and frequent critic. And she will give me advice and counsel quite often, and of course I love her and appreciate it."

McCain often points to his mother's active life when asked about his own age.

"The fact is that I'm in great shape, and I hiked the Grand Canyon with my son last August from rim to rim," McCain said during the 'Meet the Press' interview. "I'm ready to serve, and I'm sure that people will make their own judgments. But they'll make their judgments by watching me and my performance. And they were very happy to see Ronald Reagan in for a second term."

He would be the oldest president inaugurated for a first term if he wins. He even joked about Willliam Henry Harrison, the 3rd oldest sworn in, who died 31 days after taking office.

"Poor guy", McCain said.

-- CNN Political Desk Managing Editor Steve Brusk