A work used by some instead of "react(s)". Also acceptable to be seen as r34x (ieet form -.-).
NOTE: Most likely to be used by people ages 11-14 in AOL(tm) Instant Messenger chatrooms.
Person 1: omg i just got pwn3d by tyler.
Person 2: U over-reax man.
Smart Person: Why don't you two learn to spell things correctly?
Person 2: Smart, stop over-reaxing, cuz they aint nothin u can do bout it.
Person 1: "Reax" is a lame word.