Top Definition
An unexplained, immediate anger attack or rage brought on by perceived incompetence by other people or perceived outcome that is not favorable to the egomaniac throwing the fit. O'reillying is usually accompanied with phrases such as, "Can't do it", "Go Go", "lets do it live" and "F- it"
“Damn I messed up my time sheet and my boss is O'reillying”
by Joe Mantis June 11, 2008
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