A couple of old men were hanging out at the bar, talking about whatever old men talk about.
"You know," said John, "When I was 30 and got an erection, I couldn't bend it if my life depended on me. When I hit 40, I was able to bend it about 10 degrees if I really put some muscle to it. Then at 50, I was able to bend it 20 degrees without breaking a sweat and now that I'm going to be 60, I can almost bend it in half with just one hand."
"So what," say Jack. "What are you getting at?"
"Well," says John. "I was just wondering how much stronger I'm gonna get!"