Would you mind posting where you read this? The article, the page, the website, any evidence to back up what you are saying. Saying cialis or Viagra make your penis bigger is not correct. It will allow the blood to flow to your 'member' and become erect as as such bigger if you have erectile dysfunction. Taking it will not make your Johnson any bigger unless you are turned on and blood flow should start hence why people who take Cialis don't walk around with an erection all the time. Many people take low dose cialis daily and let it build up.
If you have a massive gut or are carrying a lot of excess body fat in that area, it might be harder to find a position to penetrate at 100% but that isn't what you said. I am curious what you mean.
Not that I care about your 'dick' as you say, but how do you know it changed lengths in your 20's? I'm not being sarcastic.
You refer to a 'cord thingy' - if you go to a surgeon because you have a micro penis they will consider cutting the suspensory ligament so it hangs down easier and looks bigger. Docs can do more but this is a somewhat common procedure for people who think there penis looks too small.
We are getting way off the topic of this thread but I had to ask as I want to read the information you are siting.
thanks