Technicality

Ian: ‘No, not this book! I wanna read that book.’ He points in the general direction of the bookshelf.

Me: ‘Which book?’

I: ‘That book! The bus book.’

M: ‘Where? I don’t see it.’

I: ‘There! The bus book!’

M: ‘No, honey. Where? Where’s the book?’

I: ‘It’s behind the book!’