He's asking questions again.

This being England we had a week off a week or so back because nothing says commitment to education like having a holiday seven weeks into term. We spent the time hiding from the rain and watching the builders lash our new kitchen together. One night the kids and I had went on a date to see Johnny English (won't even mention my car dying as we turned into the parking space).

One morning I was washing dishes in the remnant of our kitchen when destructoBoy came in and sat on the steps. "Muuum.." My blood ran cold. That tone of voice was precusor to the kind of question I haven't dealt with in a while.

 Suffice it to say I answered it through example of a black plastic bin bag. Both in its flaccid state.

And when filled with air.

He and his sister were in hysterics by the end of my demonstration.