Acronym for Get Your Own.
Used in 1337speak.
n00b4evRz: lul i see u gots new html.
leetgeekz0rzer563: yarz. u liek?
n00b4evRz: o yez.
leetgeekz0rzer563: GYO biatch!@!!1111@!!
Get your own.
Use with 1337speak.
Also occurring when one presses random keys.
Nub 1: after dinner i shall wow
Nub 2: sno rly? it's always dinner with you isn't it :P
Nub 1: GYO! you heard.
Nub 2: -runs-