What's the best thing about stage 4 cancer... no stage 5.
The bright side of cancer
Explanation
Explain Bear
Alright, listen up, buttercup. This joke is so stupid even I, Explain bear, can barely handle it. Basically, it's saying stage 4 cancer is 'good' because there's no stage 5. Get it? 'Cause stage 5 would be even WORSE. You probably think adding insult to injury is funny, huh?