"I haven't seen you in three years," he said, reading the letter aloud. "If you get stressed too much, you'll go bald. I don't want to have a bald mother. I'm working hard so you can relax."

"I think a lot of people like me in the army," he continued, but he worried about abrasive users online. "But please don't look at comments on the Internet," he finished, bringing out a rousing round of laughter from the audience.

That's some good advice!

SEE ALSO: Girls' Generation's Tiffany says idols these days are so lazy