A teenage boy and his grandfather go fishing one day. While
fishing, the old man starts talking about how times have
changed. The young man picks up on this and starts talking
about the various problems and diseases going around.
Teen says, "Grandpa, they didn't have a whole lot of problems
with 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."