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3.
#
The official symbol of attention seekers on the internet
Attention Whore: "#YOLO, #SWAGG, #Kony2012
by yooooollllooo February 23, 2013
 
8.
#
For tweets, instagram, facebook, and such
#josh hutcherson is cuuuuuute
by first_jumper♡♥ November 24, 2013
 
9.
#
Where I'm from it's to be added to the end of a phrase or sentence in order to give it romantic implications in IM and texts.
Originating from the MSN eye-brow waggling emoticon which is sometimes has the keyboard shortcut "#"
Person: "He walked her home last night" (neutral sentence)

Person: "He walked her home last night #" (meaning something happened between them)
by hairysocks45 July 14, 2009
 
10.
#
used in text or chat as a replacement for 'xo' as it is a tic tac toe grid which holds exxes and ohs.
"k. im off to the cafe for a change of scenery. ill talk to you later #"

"bye4now #"
by J. Raymond March 23, 2010
 
11.
#
A written symbol for the term "waffle" meaning one who has homo-sexual tendencies or is prone to homo-sexual actions; Represented through hand gestures by placing two fingers of one hand (as in a peace sign gesture) in one orientation and placing two fingers of the other hand behind the first hand and oriented perpendicular to the first hand, thus forming a visually analogous hash mark with the hands;
"Mike Grinnon used to try and pick up chicks at Lupo's by saying he played basketball, that kid's such a #waffle#."

"Dude, #waffle# rule in full effect"

"#WAFFLE#, #WAFFLE#, #WAFFLE#!" (in a berating chant)
by Rajmahal33 April 03, 2008
 
12.
#
When someone accidently presses it instead of the enter key. An idiot tbh.
Person 1: OMFG YEAH, DO YOU AGREE?!
Person 2: yeahh#
Person 1: why da hash?
Person 2: STFU NOOB.
by HEATHHYYY<3 September 18, 2008
 
13.
#
A symbol to represent a fist pound, or "Pound it". Can be used used when a real pound it isn't possible, such as when talking over an instant messenger.
Person one: "Dude, I got laid last night!"
Person two: "Nice, # bro"
Person one: "#"
by Dresryche May 24, 2008
 
14.
#
Used to express love. Derives from the symbol for heart, <3 , which was typed incorrectly as <#, and then shortened into just #.

I # Arlene, she makes my world go 'round.

I feel so much # for Arlene right now.
by thekeenone May 10, 2007