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15.
GDI
Essentially indicates that there is nothing for which Greek people cannot come up with a particular label.

Fabulous at being apparently unable to handle ambiguity or individuality of any variety, the term GDI is a universal label applied to all college students who choose not to participate in the Greek system.

Whether the apparent obsession with labeling everything belies rampant intellectual laziness, extreme insecurity expressed in a fear of what is "different" from a certain perspective, or both is an open question.

Either way, the same mentality extends beyond the categorization of the college social structure to brand names (are you a Chanel girl? an Abercrombie man? an Alpha-Delta-Zeta or a Kappa-Gamma-Blamma?), and beyond that to even more insidious forms of labeling, such as racism.

However, it all likely comes down to extreme insecurity being expressed in one particular way; label everything, achieve nothing, derive self-esteem instead from trying to look down upon anyone whom you define as an A instead of an B.
What's your label?

Huh?

I mean, what Sorority are you in?

None, I'm a human, an individual one even

No you're a GDI
by Alpha-Delta-Delta November 21, 2009
 
16.
GDI
Acronym for "Gays Day In."
Danny: "Let's have a GDI and watch Sex and the City."
by DJ Andre October 15, 2009
 
17.
GDI
Goddamn independent, usually referring to tree hugging liberals from san francisco who hate the greek system.
Greg Norris is a GDI
by GNI69 November 23, 2011
 
18.
GDI
"Good day indicator" - A gauge to help one measure how good the day will be. Normally to achieve a good GDI you must have sex upon waking up. First thing. Not after breakfast or showering or brushing teeth. Right at the awakening. To have a high GDI, orgasm has to occur, no if, ands, or maybes.

For a male: high GDI occurs when fully incapacitated after morning sex.

For a female: uncontrolled squirting or jello like legs with the inability to stand. Or the mixture of all the above.
I feel great today! This morning my girl/guy raised my GDI so I feel like I can take on anything!

What's your GDI at?
by calie2bama June 08, 2010
 
19.
GDI
God Damn Inbred.
Isaiah is such a GDI.
by zlampiece January 04, 2011
 
20.
GDI
An acronym for God Damn Independent. GDI's are people who actively choose to not affiliate with Greek life. GDI's come in many forms, ranging from the nerdy book worm to the lazy stoner to the Greek wanna-be's. Regardless, majority of GDI's rear their heads during the infamous rush week at schools across the country to get a one week taste of Greek life and it's parties, just to fall back into the traditional dorm drinking life-style shortly afterwards.
So dude, are you thinking about rushing our house?

Well, actually I'm here for the keg.

Pssh, GDI's
by Koobut March 10, 2010
 
21.
GDI
A 'Greek Deprived Individual'. One that scorns greek life, but is jealous they're not apart of it. They often wear cargo shorts, flat billed hats, A&F, Aero, Hollister, and American Eagle. They usually live in dorms, and don't have cool parties or social events to attend on weekends or weekdays. However, some do have houses where they throw their own parties, but they're BYOB or pay $5 to get in. In addition they major in pointless shit like art, film, or philosophy.
"I wish I could go to that beach party. Too bad I'm a GDI."
by otto rocket June 15, 2012