Internet Slang start's with I

I<3U I Love You

I'MA I am going to

I/O Input/Output

I8 Aight, aite, alright

IA I Agree

IAB I Am Bored

IAC In Any Case

IAE In Any Event

IAG It's All Good

IAL I Ain't Laughing
I Actually Laughed

IAMA I Am Mildly Amused

IANAD I Am Not A Doctor

IANAL I Am Not A Lawyer (this is an uninformed opinion)

IAS In A Second

IAW In Accordance With
I Agree With

IAWTC I Agree With That/This Comment

IAWTCSM I Agree With This Comment So Much

IB I'm Back

IB2D I Beg To Differ

IBAN International Bank Account Number

IBB I'll Be Back

IBID Ibidem (In the same place)

IBM International Business Machines

IBTD In Before The Delete
I Beg To Differ

IBTL In Before the Lock

IBYP I Beg Your Pardon

IC I See

ICAM I couldn't agree more

ICB I Can't Believe...

ICBB I can't be bothered

ICBI I Can't Believe It

ICBINB I Can't Belive It's Not Butter

ICBSST I can't believe she said that

ICCL I Couldn't Care Less

ICP Insane Clown Posse (band)

ICQ I Seek You (Instant Messaging Program)

ICR I Can't Remember

ICSL I Couldn't/Can't Stop Laughing

ICT Information and Communication Technology

ICU Intensive Care Unit
I See You

ICWUDT I See What You Did There

ICYDK In Case You Didn't Know

ID Identity

IDB  In Da Butt

IDBI I Don't Believe It

IDC I Dont Care

IDD Indeed

IDE Integrated Development Environment
Integrated Device Electronics

IDEK I Don't Even Know

IDFC I Don't F***ing Care

IDFK I Don't F***ing Know

IDFLI I Don't Feel Like It

IDGAC I Don't Give A Crap

IDGAD I Don't Give A Damn.

IDGAF I Don't Give A F***

IDGARA I Don't Give A Rat's A**

IDGAS I Don't Give A S**t

IDGI I Don't Get It

IDH I'd Do Her/Him

IDHAC I Don't Have A Clue

IDI I Doubt It

IDK I Don't Know

IDKE I Don't Know Either

IDKY I Don't Know Why

IDLE Inactive

IDLI I Don't Like It

IDLY I Don't Love/Like You

IDM It Doesn't Matter
Intelligent Dance Music

IDN I Don't kNow

IDR I Don't Remember

IDRC I Don't Really Care

IDRGAF I Don't Really Give A F***

IDRK I Don't Really Know

IDST If Destroyed, Still True

IDT I Don't Think

IDTS I Don't Think So

IDU I Don't Understand

IDUNNO I Don't Know

IDW I Don't Want

IDWTAI I Don't Wanna Talk About It

IE Id Est (that is)
Internet Explorer

IFF If and only if
Identification: Friend or Foe
Internet Friends Forever

IFHY I F***ing Hate You

IFLU I F***ing Love You

IFLY I F***ing Love You

IG Ignorant

IGG Ignore
I Gotta Go

IGGY Ignore

IGHT Alright

IGI I Get It

IGM I Got Mine

IGMC I'll Get My Coat

IGN In Game Name

IGNB I'm Going Now, Bye

IGNTS I've Got Nothing To Say

IGS I Guess So

IGTG I got to go

IGU I Give Up

IH8U I Hate You

IHM i hate mondays

IHML I Hate My Life

IHNC I have no clue

IHNFC I Have No F***ing Clue

IHNI I Have No Idea

IHS I Hope So

IHT I Hate This

IHU I Hate You

IHY I Hate You

IHYSM I Hate You So Much

IIGHT Alright, OK

IIL I'm In Love

IINM If I'm Not Mistaken

IIR Idiot in room

IIRC If I Remember Correctly

IIS Internet Information Services

IITUWUTMAS if i tell u will u tell me a secret?

IITYWIMIWHTKY If I Tell You What It Means I Will Have to Kill You

IITYWTMWYBMAD If I Tell You What This Means Will You Buy Me a Drink?

IITYWTMWYKM If I Tell You What This Means Will You Kiss Me?

IJ I'm Joking

IJDGAF I Just Don't Give A F***

IJS I'm Just Saying

IJWTK I Just Want To Know

IK I Know

IKHYF I Know How You Feel

IKLY I Kinda Like You

IKMTY I Know More Than You

IKR I Know, Right

IKT I Knew That

IKTR I Know That's Right

IKWUM I Know What You Mean

IKWYDLS I know what you did last summer

IKWYL I know where you live

IKWYM I Know What You Mean

IKY I Know You

IKYP I'll Keep You Posted

IL In Love

ILD Ich Liebe Dich (I Love You)

ILH I Love Him/Her

ILI I Love It

ILL Cool, tight, etc

ILLEST Best

ILLY Fresh, cool

ILM I lige måde (the same to you)
Industrial Light and Magic

ILML I Love My Life

ILMO In Loving Memory Of

ILU I Love You

ILU2 I love you too

ILUSFM I Love You So F***ing Much

ILUSM I love you so much

ILUT I Love You Too

ILY I Love You

ILY2 I Love You Too

ILYA I Love You All

ILYAAF I Love You As A Friend

ILYAM I Love You As a Mate

ILYB I Love You Both

ILYF I'll Love You Forever

ILYG I Love You Guys/Girls

ILYK I'll Let You Know

ILYL I love you lots

ILYLAS I Love You Like A Sister

ILYLT I Love You Long Time

ILYM I Love You More

ILYSDM I Love You So Damn Much

ILYSFM I Love You So F***ing Much

ILYSM I Love You So Much

ILYSMB I Love You So Much Baby

ILYSMM I Love You So Much More

ILYT I Love You Too

ILYVM I Love You Very Much

ILYWAMH I Love You With All My Heart

IM Instant Message

IMA I am going to

IMAHO In My Absolutely Honest Opinion

IMAO In My Arrogant Opinion

IMAP Internet Message Access Protocol

IMB I'm Bored

IMBA Imbalanced

IMBO in My Biased Opinion

IMCO In My Considered Opinion

IMDB Internet Movie Database

IME In My Experience

IMEO In My Educated Opinion

IMF International Monetary Fund

IMFAO In My F***ing Arrogant Opinion

IMFO In My F***ing Opinion

IMH In My Head

IMHO In My Humble Opinion

IMING Instant Messaging

IMK In My Knowledge

IMMA I'm Going To

IMMAO In My Most Arrogant Opinion

IMMD It Made My Day

IMNSHO In My Not So Humble Opinion

IMO In My Opinion

IMOO In My Own Opinion

IMPO In My Personal Opinion

IMR I Mean, Really

IMU I miss you

IMUSM I Miss You So Much

IMVU Instant Messaging Virtual Universe

IMWTK Inquiring minds want to know

IMY I Miss You

IMYA I miss You Already

IMYSFM I Miss You So F***ing Much

IMYSM I Miss You So Much

IMYT I Miss You Too

IN THE BAG Definite

INB I'm Not Bothered

INB4 In Before (already mentioned)

INBD It's no big deal

INC Incoming

INDY Independent

INIT Isn't it?
Initialization

INK I Never Knew
Tattoo

INKED Tattooed

INNIT Isn't It

INO I Know

INORITE I Know, Right?

INPO In No Particular Order

INRS It's Not Rocket Science

INT Isn't it

INVU I envy you

INY I Need You

IOAB I'm On A Boat

IOH I'm Outta Here

IOI Indication of Interest
I'm Over It

IOKIYAR It's Okay If You're A Republican

IOM Isle Of Man

ION In Other News

IONO I don't know

IOU I Owe You

IOW In Other Words

IOYK If Only You Knew

IP Internet Protocol
Intellectual Property

IPN Instant Payment Notification (PayPal)
I'm Posting Naked

IPO Initial Public Offering

IPOD MP3 player from Apple

IQ Intelligence Quotient

IRA Irish Republican Army

IRC Internet Relay Chat

IRCOP Internet Relay Chat Operator

IRDC I Really Don't Care

IRDGAF I Really Don't Give A F***

IRDK I Really Don't Know

IRIE Feeling good, alright

IRL In Real Life

IRLY I Really Like You

IRMC  I Rest My Case

IRS Internal Revenue Service

ISA Inshaa Allah (Arabic), OK

ISB I'm So Bored

ISDN Integrated Services Digital Network

ISH Suffix indicating vagueness

ISLY I Still Love You

ISO In Search Of

ISP Internet Service Provider

ISS International Space Station
I'm So Sorry

ISTM It Seems To Me

ISTR I Seem To Recall

ISWYDT I See What You Did There

ISWYM I See What You Mean

IT Information Technology

ITA I Totally Agree

ITALY I Trust And Love You

ITB In The Butt
Is The Best

ITC In This Channel
In That Case

ITE Alright? (Hello)

ITK In The Know

ITMA It's That Man Again

ITN I Think Not

ITS I Think/Thought So

ITT In This Thread

ITTET In These Tough Economic Times

ITV Independent TV (UK)

ITYF I Think You'll Find

ITYL I'll Tell You Later

ITYM I Think You Mean

ITYS I Told You So

ITZ It's
In The Zone

IWALY I Will Always Love You

IWHI I Would Hit It

IWIK I Wish I Knew

IWM It Wasn't Me

IWSN I Want Sex Now

IWTD I Want To Die

IYA Hiya, hello

IYAM If You Ask Me

IYBTYBA If You Believe That You'll Believe Anything

IYD In Your Dreams

IYDK If You Didn't Know

IYDM If You Don't Mind

IYF In Your Face

IYH In Your Head

IYKWIM If You Know What I Mean

IYO In Your Opinion

IYQ I Like You

IYSS If You Say So

IYSWIM If You See What I Mean

IYT All right

IYTT If You Think That

IYW If You Want/Will

     IZ Is, it's