off one's trolley

Prepositional phrase

 * 1)  Having gone mad; insane.
 * 2) * 1915–1981: Kenneth Burke [contrib.], Malcolm Cowley [contrib.], and Paul Jay (editor), The Selected Correspondence of Kenneth Burke and Malcolm Cowley, 1915–1981, page 302 (1988; Viking; ISBN 0670813362, 9780670813360)
 * On the whole, bodily symptoms have at least the consolatory fact about them, that they replace mental symptoms, fears of going off one’s trolley; and I suppose that, if I got rid of all the physical symptoms, things would but have been cleared away for a new worry about mental ones?
 * On the whole, bodily symptoms have at least the consolatory fact about them, that they replace mental symptoms, fears of going off one’s trolley; and I suppose that, if I got rid of all the physical symptoms, things would but have been cleared away for a new worry about mental ones?