w00t
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w00t was originally an acronym for "we owned other team" but used 1337$p34|< for some of the letters(w00t instead of woot). It is now commonly used as an interjection of joy.
"w00t! I pwn3d j00!"
"Oh! You see that hs??!?! W00T4G3!"
http://www.urbandictionaronary.com/define.php?term=w00t