Heroin is a an opioid pain killer. Heroin is used as a recreational drug for its euphoric effects.
In Snospis Eht: Marges Day: Part 01, a letter is seen on the fridge stating that the people of Tyksrr sacrifice heroin to the Jesusman. It also states in the letter that Bart will be locked away at the Tyksrr rehabilitation centre so that he does not steal any of the heroin.
- Snospis Eht: Sick Bart part 2: A trip to the Seaside.
- Snospis Eht: Marges Day: Part 01 (mentioned on the letter on the fridge)