A Mackintosh is a form of waterproof raincoat[?], first sold in 1824, made out of rubberized fabric. The Mackintosh is named after its Scottish inventor Charles Macintosh: note the added letter 'k' in the name of the garment.
As well as their practical use as a rainproof garment, Mackintoshes feature in a peculiarly British form of rubber fetishism.
... current through the body to kill 'the bad cells', this has no effect on any cells. These devices usually consist of a car battery, hooked up to two metal plates, ...