To kill oneself by acting in a foolish or stupid manner. It happens everyday. Stupidity can often lead to hilarious but tragic fatality. An accidental death brought about a careless or unthinking moment. Survival of the fittest. Population control. a complete lack of common sense or disregard for self preservation resulting in death. Some people are so dumb it really does kill them.
Heather: Another death by stupacide. "My boyfriend Mark was once a chemist, but now he is no more. What he thought was H2O (water), was really H2SO4 (sulfuric Acid). Mark burned his insides out. OUCH!"
Mark: "Damn, you shouldn't eat or drink in the lab. The Bitch was right again"