Or... he was a lizard person....
Let me call Alex Jones...
No,no,no he actually reincarnated himself/transmitted his conscience into a look alike some 25-30 years ago, with the help of the illuminati. Hawking wanted to still preach science in his old form, but his ALS limited him otherwise.
With his other body/sleeve, he just fucks around. Turns out he's a pretty popular YouTuber now:
[video=youtube;7PsO3mo7pa4]https://www.youtube.com/watch?v=7PsO3mo7pa4[/video]
The use of the wheelchair in the video, is, of course, on purpose. A subliminal reference to his original self.