Emo Emoticons 

//.-
An emoticon depicting an emo kid. Parentheses are an acceptable subsitute for the slashes. ((.-

Many variations of the "emo"ticon exist to express different moods (as emo kids often do).
Among the most popular are:
The Sad Emo Kid //_;
The Happy Emo Kid //_^
The Amazed Emo Kid //_o
The Angry Emo Kid //_<
The Pissed Off Emo Kid //_-
The "I Don't Care" Emo Kid //.-
The Sleepy Emo Kid //_~

an example of how Emo Emoticons appear in an IM conversation
"I don't care" //.-
"REALLY? HOLY CRAP!" //_O
"GRRRR" //_<
"YAY!" //_^
"My girlfried broke up with me." //_;
"Just leave me alone." //_-

a conversation can go something like this:

1: Hello!
2: //_< //_;
1: //_O
2: //.- //_-

Emo Emoticons by HOB4congress December 23, 2006

anime emoticons 

Emoticons derived from manga and anime (style of art) showing feelings, used in chatrooms, online, and with cellphones nowadays.

To be really nice I will give you multiple examples of anime emoticons:
(つ^з^)つ
*Feeling happy/dancing/cheering*
(¬_¬)
*Yeah right...*
m(_ _)m
*Sleeping on the desk/given up*
(^_^)
*Happy*
*(^O^)*
*Happier*

anime emoticons by Kuro-Puu~ August 5, 2009

emoticonsternation

noun: The unpleasant surprise you get when you choose a seemingly harmless emoticon from the static image palette only to see it animate into something tasteless after you've chosen it and sent it.

Alternate:
noun: An emoticon that looks harmless when viewed in the static image palette, but provides a nasty surprise when you select it and send it by animating into something tasteless.

Imagine my emoticonsternation when that smiley face I sent to my mom turned out to be a bloody horrorshow.

I got fired when I accidentally sent my boss an emoticonsternation.

emoticonsternation by jfkelley June 15, 2009

Emoticons

Faces made to express emotions using simple keyboard keys. You Azian, You AOL, and you'll see deez alot. You're lucky I don't give a shit, but I'm sure you all are gonna bite off on these...

:) ;) :^) ^_^ *.* ^o^ @_@ :Þ ?_? and the saddest one of all, the Pikachu: (o^_^o) Pika-pi! 9_9

Emoticons by Joshiro007 February 17, 2003

Emoicon

Emoicon is a derivitive of Emotion Icon, similar to emoticon, except emoicons tend to be used more on forums, where as emoticons are used more in chat.

"A simple text depiction of what one's face would look like if an online conversation were taking place in person"

1.) Hi, how are you? ?:)

2.) You did what? :yikes:

3.) Stfu! >:\

Emoicon by Jigzaw November 26, 2004

Emoticons

Like this:
:¬) :¬( (:¬D :¬D :¬P :¬L :¬S
:'( :¬" :¬*
They express emotions using icons. Used in text or online.

Text1: :¬)
Text2: :¬(

Text 1 is HAPPY, Text 2 is SAD.
Those is emoticons
;¬)

Emoticons by Cosmogirl/Little Miss Vixen January 22, 2009

emoticonstipated

Adjective describing a person's state of mind when they overuse emoticons in a text message or im conversation.

"Check out this text message! Jeez, he must be really emoticonstipated!"

"I like getting texts from my girlfriend, but sometimes she's just so emoticonstipated!"

"I was so emoticonstipated last night, so I sent text messages to everyone in my phone. I feel a lot better now."

emoticonstipated by :);):(;( October 10, 2012