Stephen Hawking's Dying Destination

This joke plays on the stereotype that Currys PC World is a place to buy anything electronic. It humorously suggests that a dying Stephen Hawking, who was known for his work in physics and cosmology as well as his computer-based communication system, could be taken to Currys, implying he might be treated like a malfunctioning piece of tech rather than being taken to a hospital, which is the obvious choice.