An old man goes into the doctor and says there is something that has been troubling him and he has a question.
"When I was 20, if my thing was hard I couldn't get it to bend at all. Then when I was 40, I found that I could bend it a little bit. When I hit 50, I could move it around pretty much. And now that I'm 70, I find I can just about bend it in half."
"I see", says the doctor, "and just what is your question?"
The old man replies, "Just how strong am I going to get?"