Top Definition
1. a state of being where the person in question tends to fuck up or mess things up very badly

2. a common excuse used to justify seemingly retarded actions
Student: "Of fuck i got the wrong answer again!"

Teacher: " Hey homie make sure yo' caclucatin' device ain't in radian mode!!"

Person 1: "Damn dat nigga done fucked up real bad. He be goin to jail fo' 15 years fo' murder. What da fuck was he thinkin??"

Person 2: "Naw dude it wudnt his fault. He was in mutha fuckin radian mode!!"
by Redsoxfan1792 November 02, 2009
5 Words related to Radian Mode

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