I don't think I would be able to imagine Niall as a child...
~just think~
N: MUM I'm home from school!
M: ok Niall go eat those cookies I left out for you wile I take care of the laundry!
N: ok, thanks mum
M: wait only eat 2 the other 2 are for Greg ok sweetie?
N: ok mum!
~Niall eats cookies then starts running around in his bedroom~
M: *says to self* oh God my child has ADHD