xyxyl
some weird poisonous gas made by the Germans during WW2.
German man: lets make a dangerous gas to smoke out those Americans and we will call it xyxyl! also it will be made of several isomeric monovalent radicals C8H9 derived from the three xylenes by removal of a hydrogen atom especially : a radical of the formula (CH3)2C6H3.
Other German: wtf is your brain
Other German: wtf is your brain