Means high vertical jump typically in the sport of basketball but can be used in volleyball aswell, If you have mad ups, or mups, your vert is usually greater than 30 inches standing.
Wow! That kid has mad ups, you see him throw that down in Bill's face?
GlitchTheGame.com acronym, made popular by the WiteFlight and his socom and halo 2 hacking site, used by most haxing socomers
I just learned the ninja jump on GTG, Wite really knows his sh**!
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