You might be a tweaker if:
1) You feel like eating is a hassle or waste of time.
2) You check that your light is off in the hallway, even though you just turned it off and know you did, and then go and check two more times.
3) You think someone might be hiding behind the furniture in your bedroom in the middle of the night, and spying on you.
4) You want to write something - anything - you have to write.
5) You wake up feeling like total shit until a pleasant bath while your fix kicks in, then you are singing and dancing (literally).
6) You write what should be a one page paper in five or six pages, while wanting to write even more.
7) You constantly think about amphetamines - hmmm....
8) You have conversations about anything and everything with everyone, and don't mind a bit so long as your mouth keeps running.
9) You want to send a simple message saying "hello" or "thank you", and end up writing about why barbiturates are especially dangerous to mix with other CNS depressants, or on the whole. (You go on wild tangents, that is.)
10) You are constantly pissing - constantly - if you are keeping hydrated.
11) You scrub your hands for not a few seconds, not 10, not 20, but three or four or five minutes, just because they might have deserved a handwash.
12) You think you are always right, always, always, always.
13) You think you are the best person, in every way, in the room, or world, really.
14) You think, if you put your mind to it, you could do whatever anyone else has done.
15) You begin to think everyone is plotting against you, and going to turn you over to the cops.
16) You look at the same thing, examining it, for minutes on end, and for no good reason - you have already seen it.
17) You feel great one minute, and like absolute shit the next.
18) You amaze yourself with your own abilities to do whatever it is you are doing.
19) You make a 19-point list on this thread, when you are really quite drained, and want to go to bed, but just don't.