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1 definition by Wug

Shortened form of "y u no," itself a corruption of "Why don't you." Commonly used by l33t hax0rs and twitter users.

Pronounced "Why you no."
Internet user: Webcomics yuno bottomless?
Twitterer: @GBush yuno get impeached #medicare #yolo #iraq #winning
Hax0r: GENTOO YUNO HAVE FFMPEG!?$!?@#!1#?!
by Wug September 28, 2012