Vian (5yo) is curious as ever. He asked me how old I am. 

Me: I am 40. 

Vian: You know 40 is not that old for an adult. 

Me: Really? How come? 

Vian: I can count to 40 really fast and it doesn’t even take that long. 

He then proceeds to demonstrate how quickly he can count from 1 to 40.