The act of doing the same thing over and over, expecting different results, much like the Old-School RuneScape user Yx, who is a homophobe and places chairs and rope under lgbt players trying to tell them to kill themselves, and makes jokes about mass shootings.
NutsAndTits: Yx is so mad that they are failing at this. I'll take the free items though.
Rayquazas: Yx, you know the definition of insanity right?
Yx: no what?
Tehnubness: Exactly what you are doing, and failing at.
Someone who has a piss kink or has been diagnosed with insanity
Ew he has a piss kink he should file for insanity
Doing the same shit over and over and over again expecting a different result.
Bayou Concrete (MMC Materials) is the literal definition of insanity.
being a mentally unstable person
wow that jayden guy should get checked for insanity
Feeling as if ur brain's on adderal
I've got some Insanity traits