Death stick

Elan: "You wanna buy some death sticks?" Obi-Wan: "You want to sell me death sticks." Elan: "Uh, I don't wanna sell you deathsticks." Obi-Wan: "You do want to sell me death sticks." Elan: "Erm... No..?..Creepy old bastard..." — Elan Sleazebaggano and Obi-Wan Kenobi

Effectively, like normal ciggies, but they fucked with your force connection. Most of the Jedi smoked them, and they all got PWNed. Coincidence? I think not.