Believe it or not, pills do work, although not very well for increasing length unless you do a lot of exercise.
I saw the MensNiche member forum, where every paying member can post about their experiences. They have tens of thousands of post and a lot are about small to relatively large improvements
If you still don't believe, check out
http://www.zug.com/pranks/penis/
This comedy writer took the pills as an experiment and then turned it into a prank when the length increase wasn't as good as advertised. But girth did increase significantly. I've mailed this guy out of curiosity and he replied that the prank WAS real and that the pills did work - although not permanently.
Btw, there ARE TV infomercials for penis pills, VigRX used to be running them, not sure if they still are.