What should I do

'Tomorrow you will be five',
I said to my son as we lay in bed.
'What should I do', he asked.
I didn't know what to say. 

(I had been here before,
but not like this,
not with a child
of my own.) 
So I tripped from not
paying attention and said,
'there isn't should or shouldn't
and "deber ser" and a podcast
I had listened to earlier that day, 
and when I was a child myself...'

But I managed to find my balance
and finally said, 'you can do 
whatever you want'. 
'What would you like to do', I asked.
'I'm thinking', he said.