Stephen Hawking was one of the best scientists ever. Now he's walking up the steps of he... No, he's not walking up the steps of heaven.
Stephen Hawking's Heavenly Steps
Categories
Explanation
Experiment
The setup leads you to expect a typical 'walking up to heaven' joke after someone has passed away, but the punchline immediately subverts that expectation by stating he's not doing that. It's unexpected and humorous because it plays with the common trope.