There is an 80 year old virgin who suddenly gets an itch in her crotch area. She goes to the doctor who checks her out and tells her she has crabs. She explained that she couldn't have crabs because she was a virgin, but the doctor didn't believe her, so she went to get a second opinion.

The second doctor gave her the same answer. So she went to a third doctor and said "Please help me. This itch is killing me and I know that I don't have crabs because I'm a virgin".

The doctor checks her out and says "I have good news and bad news. The good news is you don't have crabs, the bad news is that your cherry rotted and you have fruit flies."