Defying gravity

The music legend also invented the anti-gravity boot that allowed him to lean all the way forward in the music video for 1987's 'Smooth Criminal'.

The patent read: “A system for allowing a shoe wearer to lean forwardly beyond his center of gravity by virtue of wearing a specially designed pair of shoes which will engage with a hitch member movably projectable through a stage surface. The shoes have a specially designed heel slot which can be detachably engaged with the hitch member by simply sliding the shoe wearer’s foot forward, thereby engaging with the hitch member.”