Good Riddles

Question: You have found a mutant algae that doubles in size every hour. It takes 18 hours for one algae plant to take up half of a certain lake.

How long would it take for two of these plants to take up half of the same lake?

Question: A man and his wife live I a nice cottage in a village near the lake. One day, they were rowing a boat when he wife fell in and the husband went in to get her out but all he could feel were plants, moss, and rocks. Two weeks after the funeral, the man was walking around the lake when he started talking to a new neighbor when the fisherman said some interesting facts. Fisherman: I haven't caught anything today. Maybe because of the fact this lake has no kelp what so ever. Mrs. Montoya was telling me about it yesterday. I always catch fish when there is kelp in a lake or pond. That is just rotten ain't it? The husband said goodbye to the neighbor and went inside and killed himself. Why is this?

Question: Drop me and the world will shatter,
and you can always find me where you empty your bladder.

What am I?

Question: A mother is 21 years older than her child. In 6 years the mother will be 5 times older than her baby.

Where is the father?

Question: Voiceless it cries,
Wingless flutters,
Toothless bites,
Mouthless mutters.

What is it?