gr10 

slightly, better than gr9.

the pepsi wasnt just, gr9, it was gr10.

gr10 by u not on my level man October 16, 2008

Gr10 

Like gr8 (great) but MORE gr8. Technically, gr8+2.
(Pronounced: grrr-ten)

Brotein shake, that show was gr10

Gr10 by Teagan3+SnoopDOdoubleG December 10, 2022

Gr100 

Like gr8 (aka great) but better.
Usually used sarcastically, occasionally used seriously.

Naps are gr100.

Gr100 by Awesomeballs August 29, 2016