:1

A sideways-style text smiley. The colon represents the eyes, and the one represents a straight-forward mouth. The line's dent(s) at the tip(s) represents the curve of a lip.
It's used to show that you're neutral when it comes to what you're saying or reading. Not happy. Not upset. Just regular.

Ramon: How are you today? ^_^
Jacky: I am content :1
Harold: My kitty Fluffy died! ;_;
Jacky: Oh. :1 Sorry.
Nancy: WELL U SUCK! xDDD
Jacky: Negative. :1

:1 by ShrewDude November 24, 2007

!!!1 

Happens when a careless internet queen gets excited and types too much.

Internet Queen : OMG LOL!!!1

!!!1 by Ben April 22, 2005

-1 

Forum Lingo, When one disagrees with another

Post 1 : I believe that I should be a moderator on this forum.
Post 2 : -1

-1 by JiTek May 19, 2008

1 

The loneliest number that you'll ever do.

2 can be as bad as 1, its the loneliest number since the number 1.

1 by WAGMIRE December 28, 2005

!!1! 

A punctuation mark most commonly used to show extreme excitement and/or shock. Since in most keyboards holding down SHIFT and pressing "1" creates an exclamation point, "!!1!" is used to imply that the writer didn't check what they were doing or that they were in a rush.

EXAMPLE 1:
Person 1: Hey, little boy! You're mom's in the hospital. She asked me, a complete stranger, to come to your school while you were switching between classes and pick you up. So, wanna get in my car? I've got candy! Don't worry, I'm not a rapist!
Person 2: OMGWTFNO!!1!

EXAMPLE 2:
Person 1: I JUST WON THE LOTTERY!!1! ZOMG!!1!!!1!
Person 2: NO!!1! FECKING!!1! WAY3Z!!1!
Person 1: Y3S WAYZ!!1!!!1! I JUST WON THE LOTT3RY!!1!
Person 2: ZOMG3!!1! HOW MUCH?!?!1?1!?!
Person 1: A MILLION DOLLARZ4S!!1!
Person 2: OMG!!1! YOU COULD BUY, LIKE, SO MUCH SHAMPOO WITH THAT!!1!
Person 1: IKR!!1!

!!1! by some wackjob on his laptop May 17, 2011

1 

It is brought from New York and it is short for ONE LOVE, people use it as a departure. When you talk to some one your close 2 or even a friend you would say 1, befor you get off the phone or when your leaving your freind or family.

Jonella: well i gotta go so call me later ok!
Devin: aight das kool imma hit'chu up ~1~

1 by Nitrizzy May 13, 2005

_1_

short term used in I-M for the middle finger

fuck you bitch _1_

_1_ by Amili Mili Mili June 17, 2009