I've never been diagnosed, so dismiss this if you like. There's zero reason to get diagnosed. It's not like there's appealing treatment and there's nothing about myself that I would want to change.
But just to clarify, I'm not sadistic and I don't get off by kicking puppies. And I have feelings. I can just kind of... shut them down if I don't want to feel them. And who wants to feel negative emotions? I also tend to be much more even keeled than normal people -- my feelings aren't as deep and they're more fleeting. I'm happy about the thought of something good happening, I guess, but I don't really excited. I think I used to be excited as a kid/young teenage, but I'm not sure if it was genuine or if I was just acting excited. And there are some feelings I've never had or don't have often. I've never been in love (but I do love two or three people, I'm pretty sure). I can remember being embarrassed as a kid; once when I was made to stand up in second grade because I wasn't sure if the plural possessive of woman was "women's" or "womens'". But I don't think I can't remember being since middle school. I wouldn't hurt anyone for the pleasure of hurting them, but I wouldn't hesitate to hurt someone to get something I wanted. Like, I wouldn't bat an eye at telling a lie about someone to ensure I got a job or promotion ahead of them.
Which brings me to the very-not-cool aspects. I don't make a ton of money; my sister supports me to a large extent -- I rent my sister's house in a beautiful neighborhood when what I could afford is a kind of shitty apartment with a roommate. She buys my groceries. I pay my own bills and give her a few hundred a month. I get bored with projects easily, even projects that I was excited to start. I've had a lot of different jobs and I've studied a lot of different things. My job right now is 100% flexible, zero obligation or responsibility. I've been doing it for a year, and that's the longest I've ever had a job. But I've never been unemployed for more than a week either. I'm fairly smart, good at what I do, and I'm great at interviews.
I've never gone on more than a few dates with someone. I lose interest. My most stable 'romantic' relationships are firmly in the friends with benefits category. I'm perfectly fine on my own. I don't have an overwhelming desire to find someone and settle down. I really dislike children and would not want them. I do not have a maternal instinct. At all.
Uh, what else is there? I did start fires as I kid. I did steal frequently until I was an adult. I've never been arrested. I've never fought anyone physically. I casually used drugs in college, but I majored in art so that was pretty par for the course. I'm not an addict or an alcoholic. I can't charm the pants off of everyone; most people like me, but there have been a few people who have strongly disliked me from the moment we met. I can't manipulate anyone to do anything I want; I'm not a hypnotist. But I am very good at reading people and manipulating them for my own gain. I was very manipulative as a child, too.
Oh! I got screened as part of psych study I did in college. I got $20 and a ridiculously high LSRP score. Not diagnostic, but I fit the criteria pretty well and have a lot in common, thought wise, with people who have been diagnosed. Where I differ, generally, is violence. I'm not a violent person. I don't have uncontrollable anger. I'm more able to keep the impulsive/risk-taking behavior in check.