Rapex means to rage for no apparent reason or to get angered easily with little to no effort needed.
Kid 1: I f***** your mom!
Average Rapexir: No you didn't, you little homo!!!
Kid 2: Woah, it's a joke. Don't rapex.
Average Rapexir: No you didn't, you little homo!!!
Kid 2: Woah, it's a joke. Don't rapex.
by Eddie&Quezo March 30, 2014