I only seem to post here when I need advice. Sorry about that. I appreciate it though.
Prepare for waffling.

I've been passing as male 99.9% of the time. Even at places like the doctors when the receptionist has my sex on file.
I got called a gentleman three times today, and got a manly handshake too!
Oh, and I was at a party a couple of weeks ago, and one guy asked me if I was male or female. I said yes. (Haha, best answer ever, right?!) Then he spent the entire night trying to figure me out, despite the fact that I was being called by my birth name. A few hours later he came upto me and said "I know! You're male!". So I think there must be more to it than just the way I look? I obviously give off maleness with the way I carry myself or something.

The problem is, I don't realllly know if I'm trans. I'll not get into this, but I don't get dysphoria and I'm not too fussed about my body. I'd just prefer it to be male.

So yes, passing as male + female pronouns can get rather awkward. For example the jobcentre always call me out as "miss" and that sucks. (I don't know if it sucks cause I'm trans, or if it sucks cause I look like a dude and am just being pointed out as looking/being different.)
My friends all know me as female, and often correct people who perceive me differently. I hate this.

So at the moment, I'd definitely prefer to go by male pronouns. I could come out and tell everyone to use the pronouns and my male name. However, like I said, I'm not sure if I'm trans, so what if I tell everyone to call me a boy and then in a few months I'm parading around in a pink dress? (That's never gonna happen, but just for example.)

Just not really sure what to do I guess. I don't know if I want to transition, I just don't want people being like "Errrr, THAT's a girl?" and stuff.

Also, If I do decide to tell people to refer to me as male, how do you suggest I go about it?

This would all be a sh*t load easier if I could just have been born a dude. Haha.

what i did was just ask people if theyd call me he instead of she.  i was all nonchalant about it.  haha

i came out to a couple of friends and they were calling me he consistently, so when we were with other people everyone else just went with it.

Not all trans people want to get on testosterone or want to have surgery, but at the same time, not wanting those doesn't mean you're trans either. I think testing out the male pronouns would be a good idea, small baby steps to see where you fit in with this scenario.

It's not that I don't want to transition, I'm just not sure about it all yet.
I love the effects of testosterone. I really want facial hair and a deep voice and all that.
Just yeah, not sure/ready yet. I don't wanna be a transguy either. I just wanna be a guy. But I guess that's the same for everyone here.

I live in quite a small town. If I were tell people to start using male pronouns, then it wouldn't be long before alot of people knew about it all. Then if male pronouns and such didn't work out, I'd forever be the weird girlboy who decided to be a man for a while.
I suppose that's what I'm afraid of. If I change my mind and then look stupid.

I'm going out with a friend soon who doesn't know and I'm worrying about him using female pronouns around people who assume that I'm male. I'm really tempted to tell him via MSN.
Any ideas on what I could say?

just try out the male pronouns for a while....the only way to find out what you want to do, is to try different things. if you end up liking the male pronouns, then you do...if not, then you go back to female pronouns... just try it out...

Yeah. I wanna do that.

I just don't know how to go about telling people.
For now I'd probably only tell people that I plan on seeing within the next few months or whatever.
But I still don't know how. Makes me nervous just thinking about it.

Face to face for close friends. Letters/facebook/other types of non-direct communication work best for everyone else.

And if you can't guess, detailed explanation for close friends, short and to the point for everyone else.