seppuku

noun1

1. •
   A form of ritual suicide by disembowelment using a blade, practiced by Japanese samurai, especially to rid oneself of shame, as a means of protest, or, formerly, as a method of capital punishment.

   • I heard that if you hit a vape and then commit seppuku by slashing out your lungs, it'll look like there's a ghost leaving your body. — 2018