One day, if you are very lucky

This won't take long, so no need to even sit down.
Today I was having coffee with my girlfriend, my middle son (he's autistic, just to keep things interesting) walked up to the baby and got very close to his face. He started telling the baby that, "one day if you are very lucky, you can grow one".
He likes to be informative.
I bit, "one of what, honey?"
"I'm not talking to you about it, you are a girl and don't get to have one."
As he said this he turned, he had a perfect bandaid mustache.
I didn't ask why, the answer didn't matter/wouldn't make sense to me.

I took a picture and went back to coffee.