Answer:
How do you know carrots are good for your eyes?
Which bow can't be tied?
Found under bridges and on the Internet.
A doctor and a bus driver are both in love the same woman. The bus driver had to take a trip for a week. Before leaving he gave the woman seven apples. Why?
Everyone claims to know a way to stop these involuntary contractions but none of them work.
It rows quickly with four oars but never comes out from under his own roof. What is it?