Boris Johnson'd

Adjective:
To fuck up so badly, causing mass confusion that will last for years to come.
Having no idea what you are doing, but saying it with a half confidence and a jokey way in the hope people believe you.
Ensuring blame is always pointed at everyone else except you. This is best achieved through passive racial slurs and praying on fear of immigration.

Not having any morals and being able to lie like an acrobat even when the inter is full of videos of you saying what you are denying.
No giving a fuck about anyone or anything but you own self image, and ensuring there is dodgy cash lining you pockets.