20 and penis still has not grown

Dude, I'm going to answer this truthfully, your friends are full of c**p more than likely, unless you've seen the penis you can't trust what they say, in fact you should also say you have a big member. Those guys in porn, guess what, they are waaay bigger than average, that's why they're in the business. It ain't because they're super nice or look good (ron jeremy). Now the penis is fully grown at about 12 13, aka start of puberty. Sorry to tell you otherwise, however, you should enjoy your penis because when you get old it quits working without the use of c**p like viagra and mycoxafalin. On to the bigger = more sex, BULL$H!T I'm pretty well hung (in my opinion) at 7 1/2 8 inches I'm 27 and sometimes I go a year between sexual encounters, you know why? cause the ladies only see your penis when they've already decided to sleep with you, it's called swagger man or Game. You don't whip your penis out and the ladies all of sudden rush bum rush you like a sale at jc penny, (I've tried haha) But dude you sound cool man, just work on your game and you probably won't have any problem with them ladies.

As a side note, most women don't get off with penetration anyways, you got to go downtown to china town. You learn to please a woman and she'll remember it, like they said in the south park movie, You must find the Clitoris!!! Well dude, peace out man don't get hung up on the little things (no pun intended) If you eat it they will cum!!!!