This thread, lest anyone be offended, is meant as a joke. For example:
I’m a bisexual, left-handed agnostic theist who follows baseball and prefers his women unskinny.
My friend Amy is a pagan lesbian from England with a split personality … her alter is a 23-year-old man from Iowa with a farmboy accent.
There was a thread similar to this in IMHO recently (within a few months) of stereotyping based on ethnicity and such. I wonder if this will be similar:)
I see. So the question is something like, “What is the shortest list of characteristics that would describe you and no one else?” Interesting…
30-year-old straight male, native of Jacksonville, Florida, who loves Samuel Beckett and NASCAR, Beethoven and Minor Threat; has lived at 31 different addresses in his life; speaks English, French, Japanese, and a smidgen of Mandarin; and doesn’t consume sweets in any form (ice cream, chocolate, candies, cakes, &c.–yuk).
(Hope I haven’t missed the point completely.)
Pretty much a short list of characteristics that describe only you. In case bisexual agnostic theist wasn’t enough, and on the off-chance that there are two of us who are left-handed … 
I’m an unskinny, blue eyed, left-handed southern belle full of pink champagne (that fizzes to the top when I laugh) who enjoys the Backstreet Boys and Dave Matthews Band and has a strong adversion to jelly belly jelly beans.
Ambidextrous slightly-hearing-impaired bisexual grey-eyed mandolin-playing southern goth Deist who speaks Italian, French, and a smattering of Welsh.
Errrr. Multi-lingual agnostic Dutchman? Hmm, yeah, that narrows it down.
This is perilously close to turning into a rather wierd personal ad column.
“Wanted: Lefthanded, bisexual agnostic theist who follows football.”
Damn!
FTR, I’m a tall blond, blue-eyed lefthanded English scientist.
I’m a long-haired neohippie radical feminist schizzy libber (psych inmates’ liberation front) gnostic pseudopagan heterosexual sissy FileMaker programmer with one brown eye and one hazel eye.
And I vote.
Me, I’m a Stregha born and raised in Las Vegas who prefers the Romantic period of music, plays the violin, viola, and piano, won a partial quiz bowl scholarship to college, and really digs tennis.
And I voted yesterday.
I was neither breast-fed nor bottle-fed.
Not unique yet? What shall I add?
I have visited all 50 states of the USA, and have visited three foreign countries.
Still not good enough?
I can touch part of one ear with my tongue.
Lapsed Neo-pagan, cheerful cynic, and computer technician. Listens to punk, goth-industrial, and beethoven. Physics-defying hair.
I’m an Irish-Pakistani, rock climbing, kick boxing, ballroom dancing, bleeding heart liberal, pyromaniac, atheist, argumentative, rock chick.
I realized I was in a very small demographic one night as I was flipping channels between professional wrestling and Martha Stewart.
I’m a secular Neo-pagan Esperanto-speaking SF-reading cartoonist, webmaster, and technical writer who… is profoundly uninterested in hockey, even though he’s Canadian; doesn’t subscribe to cable or any other form of television service; listens to trance, ambient, electronica, folk, and classic rock, but not country, rap, or jazz; prefers his women unskinny, multilingual, and with little makeup, but is willing to negotiate; has friends who were, metaphorically speaking, on both sides of the barricades at Quebec City and Seattle; and… owns both a worm composter and a PalmPilot.
And I vote too.
Hmm… let’s see…
I’m a straight, short, chubby Protestant Chinese woman with glasses who likes to play around on the Internet, likes reading stuff as diverse as true crime and musicians’ biographies, listens to music as diverse as the Newsboys (Christian pop/rock group) and Eminem, loves spicy food, has a thing for accents, likes watching hockey, likes little kids, likes making lists (one of them is infamously called the Bootybase[sup]TM[/sup]), and loves being with her friends.
Enough for you yet? 
F_X
I can narrow down that demographic in 5 words:
Quaker, puzzle editor, tap dancer.
Short, curvy redheaded punk rock girly girl hockey player. Raised Jewish, currently Wiccan. Online writer and fraud analyst.
hmmm
Canadian Buddhist straight male admitted Celine Dion Fan
Likes 'NSYNC and Nadja Salerno-Sonnenberg.
No. Lib, that’d be a demographic of none
[sub]I’m gonna hafta google nadja salerno-sonnenberg, ain’t I? Aw man…[/sub]