Thanks!
My Grandson (5) asked me how old I was yesterday.
I said shall I tell the truth or lie.........?
He said, tell the truth, so I told him I was 54 today.
He said, OH MY.............and never got to say the last word as he was gobsmacked at how old I was!
So, as I thought, I should say 21 again and again and again, saves scaring the youngsters!