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8.
1. To suck at life or to be a loser with no future.
2. To be cocky for no observable qualities - for no apparent reason.
3. Someone who likes to portray himself as being nice and generous and repsectful, but in reality very stingy, selfish and rude.
4. Biggest mooch anyone can ever meet in their lifetime. Freeloads any chance he can get.
5. To be 20-35 years old, but exhibits humor of a middle school student - and genuinely thinks it's funny.
6. Someone who has absolutely NOTHING going for him. As a result, brags about the most trivial things - about things that have zero value or importance in the real world.
7. A douche bag that attempts to "One Up" EVERYONE within EVERY subject matter, many times without success. The things he does succeed in "one-upping" are worthless things such as, his socks being made of better quality than the person's next to him or his shirt being a more vibrant pink than his sister's.
8. The biggest braggart anyone can ever meet.
9. One who verbally brags about anything and everything. This ties in with being a "one upper". His bragging is usually an effect of false confidence, delusional thoughts and wishful thinking - things which in reality simply are not true.
10. A person who hosts a plethora of personality behavioral disorders. Some are very entertaining to observe, but all of them greatly affect the ones around him.
11. One's character and behaviors that perfectly defines what it means to be passive aggressive.
Ex 1.

Devon: Hey what's up guys? Like my new phone?

Douchbag: That's nice, but can your phone do THIS?

Devon: Okaaay man, who really cares? Do you really think anyone would even notice you nor pay that much just for attention you THINK your getting? No one gives a sh!*, loser. You're such a typical Twiggy. Go away!

Ex 2:

Douchbag: Hey guys. Guess what? Last night I got some sweet ass!!

A random acquaintance: Huh??.....Haha.... You mean that fat old crack head lady I saw you with? Doesn't she have 3 kids? I thought that was your mom or something! Hah... Figures. You're such a Twiggy.

Ex 3:

Douchebag: *Brags* - Hey guys! I just took my IQ test and I scored a 71!! Probally much better than YOU can ever get.

A normal person: *smirks* You're actually bragging about getting that score? *Laughs out loud*

Man, that explains everything. Now I know why you suck so hard at life. You're such a worthless Twiggy.
by captain plan3t January 19, 2010
 
9.
A Extremley beautiful girl named heather that looks like a twig.
i love twiggy. Shes extremley beautiful, and i wish she didnt have a boyfriend.
by tim mercado January 29, 2006
 
10.
To screw up on account of your own stupidity or lack of ability. Especialy regarding matters involving the opposite sex. aka "to pull a twiggy"
"So how did your date go."
"I totaly twiggy'd it, she never wants to see me again."
by James Shields January 24, 2006
 
11.
To have a long and skinny penis. Able to not try hard an pick up good looking women. Skinny in stature and proud of one's penis.
Yo, my penis is 9 inches long. Oh ya, but your skinny as a twig, Twiggy.
by bsbk May 01, 2007