'Can hedgehogs and foxes go in the sea?'

I am well aware that this particular post is straying into 'kids [well, my kids] say the funniest things' territory. I will try to steer clear of that, generally. But do other Dads / parents out there find that their children are at their funniest and most creative at six in the morning?

I have not had to set an alarm clock for many a year, because my youngest will invariably pop in at around 6 and launch straight into some bizarre question as I groggily rouse myself from my slumber. Here's a selection of my 'six-year-old alarm clock' quotes:

'One question what's really important: can hedgehogs and foxes go in the sea?'

‘Daddy, I want to make a metal detector’. ‘Ok, how do you make one of them?’ Indignantly: ‘I don’t know, don’t ask me!’
'Dad, did you know that in the Stone Age the first word was "Ug", and then "Hunga Bunga"?
'If cockroaches can survive a nuclear bomb, how do they fight?'
'Can an alien put his feet in cold water for 100 seconds?' 

'Will there ever be a tsunami?' 

'Why do countries fight?
‘Dad, when I grow up I want to be in a band called Robin Rovallo and the Flying Pigs.'

Is this a common experience?