 and running the knife through like this. Dr. Menke says if you do cut yourself, seek treatment if you can't control the bleeding or the finger is numb. You really need to get in as quickly or as urgently as possible. Whichever way you slice it, make sure the avocado is ripe and patience is key. Doctors say most injuries happen when you're in a hurry. Cristian Benavidez, CBS News, Miami.