I remember Japan's detergent suicides few days ago when I was contemplating how/why/when to say fuck you to this decaying ball of shit.
If memory serves hydrogen sulphide is inexpensive, spiteful and quick method.
The gas kills you in matter of minutes when inhaled.
If I remember correctly mixing pure sulfur with a strong bleach causes a chemical reaction that produces hydrogen sulphide.
Both ingredients are commonly available and *very* cheap
http://www.amazon.com/Pure-Sulfur-Powder-DC-Earth/dp/B005H0WA2O
http://www.amazon.com/Scotts-Outdoor-OxiClean-One-Gallon-Concentrate/dp/B00T3ZO06I/ref=sr_1_15?s=lawn-garden&ie=UTF8&qid=1454990425&sr=1-15&keywords=bleach
The game plan.
Make the damn sure that you brew your little cocktail in a enclosed place with no ventilation (e g car, basement or a apartment with sealed windows and no ventilation). Pop few hypnotics/sleeping meds to knock you out once you are done cooking and just let it set in.
This method is rather…. Evil. If memory serves it can kill off tens of people at a time in moments, so if you want to take few assholes with you, leave your car/apartment door unlocked in case someone is gullible/curious enough to open and come in.
It sounds hilarious to me at least. You might get a high score, send off few fucks to the depths of hell with you and give Internet something to laugh about.
Opinions?