Here are some riddles I found on the net. Made me chuckle.
(Especially the grape one)
Question: You throw away the outside and cook the inside. Then you eat the outside and throw away the inside. What did you eat?
Answer: Corn on the cob: You throw away the skin or sheaf, then cook it, eat the corn, then throw away the cob.
Question: What do you get if you divide the circumference of a pumpkin by its diameter?
Answer: Pumpkin pi.
Question: What did the grape say when he was sat on?
Answer: Nothing, he just let out a little whine.
Question: What do you call a stolen yam?
Answer: A hot potato.
Question: What was green and a great trick shooter?
Answer: Annie Okra
Question: What did the carrot say to the wheat?
Answer: Lettuce rest, I'm feeling beet.
Question: What what can you make from baked beans and onions?
Answer: Tear gas.
Question: What is a Honeymoon Salad?
Answer: Lettuce alone, with no dressing.
Question: What lives in winter, dies in summer, and grows with its root upward?
Answer: An icicle.
Question: An old Arab riddle goes like this:
Our servant is green.
Her children are born white and then grow black.
Who is she?
Answer: An olive tree.
Question: What is green and goes to a summer camp?
Answer: A Brussels' scout.
"Orandum est ut sit mens sana in corpore sano." Juvenal, Satire X