Good Riddles

Question: Mike has a father named BOB. Bob is the......... of mike's fatfer

Question: What does this code mean?: YY U R YY U B I C U R YY 4 ME

Question: Two brothers are twins. One twin says he is older than the other. The other twin is confused and says: in order for us to be twins we have to born on the same day. How is the one twin older than the other?

Question: why did the cops raid the orchestra pit?

Question: What can you feel but never touch, hear but never see?