How long is a piece of string?

How long is a piece of string>

‘How long is the neck of a snake?’ asked Ben
‘as long as it’s body’ Gill said
‘or maybe it has no body or neck
and it’s tail joins right onto it’s head’

'How many rungs has a ladder?' asked Ben
'as many as reach to the top'
'if there's six going up and six coming down,
then twelve, I guess, is the lot'

‘How long is a piece of string?’ asked Ben
’as long as you want it to be
it depends on how many knots it has
coz each knot makes it shorter you see’

‘Do you know all of the answers?’ asked Ben
’are the things that you say really true?’
’if you can make up a question’ said Gill
’I’ll make up an answer, or two’