A teenage boy and his grandfather go fishing one day. Whilefishing, the old man starts talking about how times havechanged. The young man picks up on this and starts talkingabout the various problems and diseases going around.Teen says, "Grandpa, they didn't have a whole lot of problemswith all these diseases when you were young did they?"Grandpa replies, "Nope."Teen says, "Well, what did you guys use for safe sex?"Grandpa replies, "A wedding ring."