Good Riddles

Question: I am a teacher, yet I am not a human nor a robot.

Question: You are a junior detective investigating a case. Boys at an apartment complain that every day, they have an egg-spinning competition with only raw eggs, and every day one particular boy wins. The boys want you to find out how. You are observing the boy spinning an egg when suddenly it drops to the floor. The apartment clerk casually hands him a broom to clean it up, as if it happens every day. You now know why the boy always wins the daily competition. How?

Question: A rich man named Steven goes to a bar and sees his long lost poor brother, Martin. "What've you been up to lately?" Steven says to Martin. "Well, one night, me and my daughter went fishing together. It was so much fun, probably the best time of my life. We told jokes and riddles and sang. In the end, we each caught two fish. We didn't have to buy food for so long, since each fish lasted us about three days," Martin said, grinning. He loved saving money, since he was less fortunate than Steven. Steven said, "Well, that's not SO much. Only 12 days worth of food. That's only 20 dollars or so of fish from the market." "For one thing, 20 dollars is a lot for ME. For another thing--brother, I may be much poorer than you, but at least I got an education! That's 18 days, my brother." Martin laughed. How was it 18 days, not 12?

Question: Which runs faster, hot or cold water?

Question: How many times can you subtract 10 from 100?