LMAO, my friend told me once how when he was little his neighbor was this crazy old lady and would invite him and his friends over for that stuff, and so they would call it "crazy juice"....
[edit] I'm NOT talking about kool-aide, cuz everyone had that, I'm talking about the two-gallon, clear, handle bottles that say 'grape drink' (or orange drink, etc....) and cost 79 cents at the thriftway.