Ok, I'm an alright guy. I have "hobbies" (If you consider being a subversive political radical and philosopher a hobby), am a hard worker, am a natural born leader, high IQ, good looks, very kind to strangers, average build (which I'm working on), etc.

I have confidence in almost everything about me, and I have no problem starting conversations, carrying conversations, asking for numbers, kissing when the reads are all in my favor, etc...
The main thing that I've been working on is trying to not seem so cocky when I'm drunk (usually it's strong rum that does me in) and the people I'm with are very "boring" seeming to me. Actually it's not just cocky, sometimes I get downright idiotic when I'm hammered and no one else is keeping my interests. I know that I have problems, but they're by no means more severe than anyone else's, and I'm working to minimize them. But...
Here's the thing:
I'm 21 and still live at my parents, not only that, but I live about a 20 minute drive from where all the beautiful women are usually hanging out. Very rarely do I see any gorgeous girls in my little suburb, and the bars here are all grungy and filled with old drunks and drug addicts who I don't want to ever be around normally (actually they're usually a lot more fun to be totally shitfaced around than most my coworkers or classmates, but being shitfaced isn't good for being laid by anyone other than utterly unfuckable bitches).
So my issue is how to appear confident when bringing up where I live to the girls.
how to avoid bringing up where I live.
And how to not seem like I'm going out of my way, which by definition I would be, by wanting to go and meet up with any girl who lives in the city.
Not only is it a bit of a drive, but it looks like I'm trying too hard, which I guess I am, but I'm so used to driving around, and my car's pretty good on gas, that I don't care myself. I just care that other people, hot girls especially, might think I'm trying too hard.
Also ever since my highschool relationship ended, and one brief one with a slut with daddy issues, I vowed never to fuck someone when my parents are in the next room over ever again.
I almost got caught in the buff a few times now, and it was so obvious that we were fucking, and my mom almost walked in. It was fucking ridiculous. I think that might have put a disproportionate amount of fear in me about this situation.
Still, it's never sexy saying you live with your parents. Obviously I'm thinking of ways to move out, looking for roomates, working on increasing my income, etc.

but in the meantime, what are some good strategies that I can use to increase my game?

I'm having a similar issue to you at the moment... But I will be moving out by the end of this year. It's definitely a good goal to have but my advice would be to wait until you're financially secure enough to do it properly. The last thing you want to do is move out a little early and get yourself caught up in a situation where you can't make ends meet.

In regards to going out to the city to meet girls... I understand exactly where you're coming from. I remember reading something a while back that said ideally you want to bring the girl into your world, not let her bring you into hers. Obviously that can be difficult to do when she lives in a happening city and you live in a shitty suburb 30 minutes away.

I'm only a rAFC, but here's my suggestion: don't go into the city to meet her. Go into the city (or someplace nearby) to do something else and then invite her along. For instance, there may be a particular store you've wanted to checkout for a while or a new bar or club that's just opened. Alternatively, find some suburbs that are close enough to the both of you and check out their social scenes and find something fun you want to do and bring her along.

That's my advice but I'm sure some of the resident MPUAs can point you in the right direction.

seems to me, OP, that the easiest solution would just be to go to a hotel/motel with girls, instead of your house. This way is easier, and you can get away with I'm in the hotel, as im just visiting. (also acts as a great excuse for a ONS)

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Reality is relative. At any given moment one only knows what he can see. To master one's perception of himself he must master other's perceptions of him first.

What do you think, a girl would think if you ask her to a hotel/motel?
That she is a working girl?!

Options:
1. Move out, since you called yourself a leader [which leader lives with his mom ? ]

2. Be frank with your mother. Tell her what you tell us now: you are leader, and you are a PUA who games girls. That you will bring girls to your room, and that your mother should be comfortable with this.

3. No money to get your own place/ no guts to tell your mom? Then accept the current situation.

I think it's alright I mean 21 is college-aged and can always use the excuse of being a broke ass college student. I know sometime I feel "Hobby-less" but I just look at things I like doing such as bike riding and walking around the city and consider those hobbies!

lol Obviously the idea is to get my own pad, but that requires a falling into place of certain factors that just hasn't happened yet.

The point of the OP was: What to do in the mean time? And I literally talk to my mom about pretty much everything, we're good friends, it doesn't matter how "understanding" she is of the situation, I just plain refuse to bring a girl home the way it is now.
When I was bringing random slutty highschool chicks/drugged up chicks with very limited shelf-life (I'd like to stress that I was absolutely not the one drugging them, just in case people got the wrong idea) into my home when I was 18-19 I certainly didn't have anyone's "blessing," but you think that stopped me from doing it? They most certainly knew that I had no idea wtf I was doing other than just being a guy...
And you think that made them WANT to barge in on me while I'm having sex? No! For god sake's it just kinda happens, and the fact that it COULD happen (and came very close a few times, AKA "Here's your laundry son!" *feminine moan* "MOM! SERIOUSLY! DO NOT OPEN THAT DOOR!") is more than enough for me to not want to try that shit ever again. That's a disturbing experience that I can laugh about now, but would utterly loathe living through again. haha

Once I got out of my most recent LTR I mellowed out in the whole "need to have sex with anything that moves" category, and now I'm just looking for genuinely cool girls with an actual life going on. My little town is a wasteland in that category, all the good ones have left or are already settled down. I've been without a decent prospect for about half a year now, maybe a little longer since I last had sex.

I don't see why a 20-30 minute drive should ruin anything if it's a girl worth spending the gas for. I'm just asking for advice on the best way to smoothly avoid the subject, or deal with it in a better fashion.
All I'm asking if there are any PUAs around these parts who have come up with clever ways to handle this situation as I'm sure I'm not the only 21 year old still living at his parents. It's temporarily ruined my mojo, though. What can I say?

Oh also, my mom almost never leaves the house, and my older sister basically lives here as well even though she has an apartment, she can't stand being alone, and she always has an opinion on the girls I have in my life, which is just aggravating to no end. That's the thing. Also girls I meet in the City don't want to drive 30 minutes out to the middle of nowhere when there's a city full of guys just as eager to fuck them as I am, plenty of them more so, I'd imagine.
Like I can literally feel myself going from winning to losing in the eyes of lots of the girls that I meet, not so much when I tell them that I live with my parents, but when I tell them WHERE I live, and how far it is away from the bar or club that I'm at. Like everything's walking distance to them. I really need to get a place out there.