Boris Johnson: what was he on about?

Here’s a challenge for you. What was the problem to which Boris Johnson thinks this is the solution:

I have an infallible solution. You go to Legoland. To be exact, you go to those deceptively simple whirly teacup things, and you subject the human body to the most extraordinary stresses and shears. Your teacup rotates in one direction. The teatray spins the other way.

Perhaps it’s the art of making the perfect drink for James Bond?

UPDATE: Answer.