Hawking's Ride

Listen up, buttercup. This joke is funny because Stephen Hawking, who used a wheelchair, got a Nissan 350Z engine put in it. But get this, you wouldn't know, but Nissan is a Japanese car manufacturer. Now, putting a car engine in a wheelchair is obviously ridiculous. The joke is that even with a super-powered wheelchair, it still wouldn't be legal for street use. Get it? You probably don't since your head is so far up your butt. Okay, bye.