I haven’t yet looked at your answer. I was thinking Norse God, but I couldn’t think why, until I remembered Loki.
What’d I win? 
My first thought was of the “Golden Girls” and the way they always referred to their patio as “The Lanai.” LOL!
Nothing, because you cheated.
You factored in the self-indulgent post content instead of focusing solely on the user name. 
Female, but not surprised if male.
NAI or Pacific Islander (partial)
Mid 20’s OR late 40’s
Wow! I got 3 out of 4*. I might be onto something, here… Maybe I should go into the business.
*You say you live in NY. But the question was your national *origin. *So where are you from, eh? Wouldn’t happen to be the Midwest, would it?
Ok I’ll bite.
Age - 27
Sex - female
Ethnicity - Hawaiin
Nationality - USA
Over in one. I don’t get the thirties connection but I do think Hawaii.
I’m from Russia. Been in NY since I was a toddler.
I’m surprised that the few specific guesses about my age turned out to be dead on, or at least pretty close.
< not looking>
It makes me think female, from India. Not sure why it feels like that though.
<looks>
Well, that was far off the mark…
So is wheresgeorge correct? Is your name Joe?
I’m simultaneously the closest and the most wrong. I specifically said you were my age or older, but you’re two months younger than I. I was that close, and I blew it.
No, I’m still seeing Russian space dog.
DAMN, beat me to it.
Lakai, now that you’ve given your answer, how about you tell us what our names suggest to you?
My favorite response I’ve gotten to the actual meaning of my user name: “Really? I thought it was Dutch!”
I’d think of a guy from Finland. Or possibly something Japanese.
Hawaiian female pops into my head.
But that very well could be because it’s so similar to ‘lanai’.
You are an Uzbek or a sandle.
Fair enough. I did feel some guilt for opening up such a narcissistic thread, but now I can even things out.
HardlySanguine - A tomato with a pale shade of red.
Sevastopol - Ukraine.
the lone cashew - A bowl with one peanut.
Der Trihs - Star Trek guards.
BigT - A heavyset black female in her mid 30’s.
cmyk - ???
Onomatopoeia - Animal nosies.
Sunspace - Some guy relaxing in the sun.
Dolores Reborn - Seinfeld episode where Jerry can’t remember his girlfriend’s name.
twickster - I think of Sylvester from Looney Tunes, because it sounds like a word that he would say.
Maggie the Ocelot - I don’t know what an Ocelot is. Without googling it, it sounds like a name for a medieval knight.
Rex Goliath - A dinosaur.
VarlosZ - A Spanish guy in his mid 40’s.
j66 - The first letter of your name followed by the year you were born.
wheresgeorge04 - A monkey.
ScareyFaerie - A scary looking fairy.
Weedy - Marijuana
pulykamell - My mind reads this as pukey smell.
Boyo Jim - A farmer somewhere in the midwest.
dawson - Dawson’s Creek.
zoid - Zoidberg from Futurama.
RandMcnally - An Irish guy.
Renee - Redhead in her mid 20’s.
TruCelt - A Celtic’s fan.
alounacara - I have no idea. Some kind of reptile maybe.
elbows - A body part.
Shakes - Milkshakes.
control-z - Keyboard.
IvoryTowerDenizen - A large ivory tower.
EvilTOJ - Evil followed by your initials.
Sicks Ate - Nothing comes to mind.
Little Nemo - A fish.
elfkin477 - An elf.
shijinn - Something Japanese.
Raginghormonal - Women in her mid 40’s.
Crusoe - Robinson
Maastricht - A type of ostrich.
Kobal2 - Kobe Bryant fan.
KinkiNipponTourist - This guy (NSFW). After a google search I see you just like Japan.
Spud - A potato.
Jackmannii - An Australian animal?
Autolycus - Lived in ancient Greece. Circa. BC 400-300.
FoieGrasIsEvil - I don’t know what Foie Gras is, but I know you don’t like it.
DCnDC - DC shoe company.
You got everyone right! Wow!