Stephen Hawking's Defense

It’s so sad because Stephen Hawking can’t even stand up for himself after all these mean jokes.

Explanation

Explain Bear

Listen up, buttercup. The joke is saying it's sad that Stephen Hawking can't "stand up" for himself because he was, you know, physically unable to stand. It's a play on words, mixing his disability with the idea of defending himself. And, uh, you should probably read a book once in a while.