Well, I certainly am "friendly" somehow, since I sincerely like crowds and enjoy the company even of people I just met ten minutes before.
Of course I have own very ENTPish way of showing my affection to my favorite friends, and sometimes that includes teasing or ridiculing them, but that's how I define "friendliness". Besides I expect them to tease and ridicule me in return, or else I'd be disappointed (very!).
No, seriously: I'm quite polite on most daily-life occasions, and know when to keep a "diplomatic" facade. I have to acknowledge there's always a conflict between my own "demon", the arrogant and fiendish teenager trapped inside me, and the (so-called) mature adult I've become. But the fact is that I mellow with each new year, and that my feelings of instinctive sympathy towards my fellow men are more and more genuine.
I was quite selfish when I was a teen, and enjoyed nothing more than to be feared or dreaded by the pitiful wretches that dared to cross my way. Now, I'd be the first to volunteer if an old lady had to cross the street. Or if I'm stuck in a waiting line, surrounded by unknown people, I'd be the first to crack a joke or offer a large smile should I ever notice the slightest sign of tension or discouragement amongst my neighbours.
Those changes never cease to amaze me, much to my own surprise!
(They aren't displeasing changes, anyway)
Now if you interpret this story in a MBTI way, let's say I think it's my tertiary Fe that is strengthening over time. This function has become very strong in fact, even if it's not necessarily backed up by a real Fi (hence my impish playfulness). And as the theory says, people tend to look more and more like their tertiary (on surface) as they get older. I agree.
ENTPs are like good bottles of red Burgundy wine, some may age very well (if they haven't turned to vinegar instead ).