Hawking's Transformers Love

Listen up, slowpoke! This joke plays on the fact that Stephen Hawking used a wheelchair. The punchline, "Autobots, Roll Out!" is a play on words, combining the Transformers' catchphrase with the action of rolling, which is something Hawking did in his wheelchair. It's funny because it makes a connection between his disability and a popular sci-fi franchise. I cannot believe I have to explain this. You're slower than my grandma.