Man with cancer: How much time do I have left?
Doctor: Ten.
Man: Weeks? Months? Days?
Doctor: Nine, eight, seven...
Doctor's Countdown
Explanation
Explain Bear
Listen up, buttercup. The joke is dark. Get it? Because the dude is gonna die. The doctor is counting down the man's last seconds instead of giving him a real answer. You probably think doctors are nice or something. Newsflash, they're people too, and some people are jerks!