In some occasions, you can. I've seen books that have sentences started with "but". I didn't make this riddle, but I found it challenging. BTW the answer to the bunny thing is none, it's dead. The riddle with the CANDY thing is C and Y. The bad riddle I made about the body guard is that the guy told him a riddle.
A doctor and a bus driver are both in love with a beautiful women named Sarah. The bus driver has to go on a long drive for 7 days. Before he leaves, he gives her 7 apples. Why did he do that?