Fun Riddles

Question: A man walks into a bar and says: Give me today's special. The bartender says: In a shot or a bottle? The man says: In a shot. The bartender gives it to him. He drinks it and then he dies. Why did he die?

Question: What is an astronaut's favorite key on the keyboard?

Question: What holds the sun up in the sky?

Question: What do you call a retired vegetable?

Question: What runs but doesn't get anywhere?