During first period our teacher was trying to get the class engaged. "So sir that's the formula for mustard gas is it?" During lunch time study session we heard... "Shit hit the fire alarm. cough, cough wheeze." Our school was closed for a week while they cleaned it. The student was suspended and then moved to a different school, we never saw the teacher again. [spoiler]mustard gas isn't that hard to make ... [/spoiler]