When your five year old out maths you....

At bed time we were talking about him one day being the grown up and trying to get his kids to sleep. Somehow this got to how long I'd live.

DS5: I think you'll die of old age when you're 105.
Me: That is pretty old. When I'm that old, you'll be an old guy too.
DS9: How old will he be?
Me: Let me think...

Two seconds later
DS5: 73

More time passes.

Get out phone calculator because my working memory is horrible.

Confirm he is correct.

DS9 to DS5: You should be a mathematician instead of a fisherman (his current proclaimed future occupation)