- (North Irish) A book you take to the toilet with you to pass the time. Usually a favourite book or the one you happen to be reading at the time. While most who take a Bog Book to the lavatory will also take a newspaper or a laptop, Only actual books can have the term applied. That said, some scientists believe that Laptops and Newspapers serve much the same function in the same situation. Kindle
users however, are just pretentious cunt
s and would be advised to do everyone else a favour and flush their overpriced nonsense down the shitter from whence it came.