Top Definition
The face perpetually plastered on Sweet Bro's face in the web comic Sweet Bro and Hella Jeff. The face has been referenced in another web comic, Homestuck.
Sweet Bro: :y

where doing this, man,
by reposefulNocturne July 19, 2011
3 more definitions
A worthless emotioncon. Like :u and such.

Can only be used in front of y. (see example)

There is also only one in existence.
Boo: He:y
WTF: Hey, cool worthless emotioncon! =D
by Booisme April 26, 2008
It's the Joker.
:y why so serious?
by Zweebna November 29, 2010
An emoticon, mostly used on MSN to express yourself as being annoyed or mad. The emoticon on MSN has a pretty funny look. It is also used in other websites and forums etc.
Random idiot : Hi!
Random idiot 2 : Hello.
Random idiot : Umadbro?
Random idiot 2 : :Y
by Guangzhou July 06, 2011

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