A perfectly normal hobby for a politician

The only explanation I can see for disclosing this is that Boris really believes that the more eccentric he paints himself, the more people will overlook his lies and inadequacies:

Boris Johnson revealed that he makes buses out of old wine crates to relax.

He says he likes to unwind by painting passengers enjoying themselves on his model vehicles.

The former mayor of London, whose term in office included the introduction of a new 'Boris' bus to the capital's streets, was speaking to TalkRadio.