Popping a blood blister: Warning GROSS

My brother got a Giant blood blister on his middle finger and he's popping it, If you are easily disturbed don't watch **He got it at work, By dropping a 60 pound cinder-block on it. Just so you guys stop asking what happened** Do not try at home unless an adult is present. Used sanitized wipes and make sure to burn the tip of the needle or pricking item to ensure all of the bacteria is dead.