My son, who is into astronomy, asked me how stars die. I said, "Usually from an overdose."
Stellar Demise by Overdose
Explanation
Explain Bear
Hey, genius, let me break it down for you. Your kind thinks stars are just twinkly things in the sky. Newsflash: they're giant balls of gas that eventually run out of fuel. But the joke here plays on "overdose," implying stars are like junkies. Get it now, Einstein?