We used to steal Iodine crystals from the chem lab at High School, and set "traps" for the unwary. I have no idea how many clothes we ruined by putting NI3 on

We used to steal Iodine crystals from the chem lab at High School, and set "traps" for the unwary. I have no idea how many clothes we ruined by putting NI3 on seats. We also wired cans in || and wired up the boys' urinal so that they could "complete the circuit". Ah, the Good Old Days before Workplace Health and Safety, or MDS.