To have all of the abilities, equipment, powerups, etc, removed from a character in a videogame. Often happens at the start, or just before the start, of the game. Occasionally happens in the mid-to-late stages, but usually doesn't last for long. The term comes from the game, Metroid, where a player is usually stripped of all powers just before the game starts, forcing a long and difficult (though actually enjoyable) journey though the planet/space-station to recollect the various abilities you had at the beginning, so that you might destroy the final boss.
When your brain attacks itself (one realizes this on a consciouslevel). One might feel as if they are "going crazy".
In conversation involving size comparison of two rivalving penis sizes....one man considers his size inferior to rivals, and asks odd request best male freind:
"Will you please listen to me, I'm creating mentacide....will you please check out my size and tell me if it's normal or not? Hemingway did it for Fitzgerald!"
The language or act of communicating only with video clips to convey a metaphorical message. This practice is common among those who prefer to express themselves (especially online) through visual motions rather than sound or written communication.
killing your mom. Yeah, just killing your mom. Your birth mom. Yeah, you stab you're mom its matricide. You choke her, it's also matricide. Hey emo kids, now you go write in your blogs about commiting matricide because your mom "doesn't get you". yeah, now you don't have to call it "killing my mom". yep.