According to the "What's your Real Age?"quiz, I'm too old to count. You could read that phrase two ways. Either way it's not flattering.
So imagine my surprise when I visited the periodontist, and, in the middle of explaining to me why my bad gums are not really my fault, he adds the phrase "because you're very young." I must have looked as shocked as I felt, because he followed that up with "certainly you're younger than me."
This is a man who has a diploma hanging on his wall that shows he graduated from university exactly one year before I did, so I suppose technically he's correct. Nevertheless I must have continued to look shocked, because at this point he opened my file and actually checked my age.
"Oh," he said.