Bending With Age

Two, old drunks in a bar. The first one says:

- Ya know, when I was 30 and got a hard-on, I couldn't bend it with either of my hands. By the time I was 40, I could bend it about 10 degrees if I tried really hard. By the time I was 50, I could bend it about 20 degrees, no problem. I'm gonna be 60 next week, and now I can almost bend it in half with just one hand.

- So - says the second drunk - what's your point?

- Well - says the first - I'm just wondering how much stronger I'm gonna get!