where did the phrase beat a dead horse come from
Flogging a dead horse However Jay Dillon[3] has discovered an earlier instance attributed to the same John Bright thirteen years earlier: speaking in Commons 28 March 1859, Lord Elcho (Francis Charteris, 10th Earl of Wemyss) remarked that Bright had not been "satisfied with the results of his winter campaign" and that "a saying was attributed to him [Bright] that he [had] found he was 'flogging a dead horse.'"[4]
Dada There is no consensus on the origin of the movement's name; a common story is that the Austrian artist Richard Huelsenbeck plunged a knife at random into a dictionary, where it landed on "dada", a colloquial French term for a hobby horse. Others note that it suggests the first words of a child, evoking a childishness and absurdity that appealed to the group. Still others speculate that the word might have been chosen to evoke a similar meaning (or no meaning at all) in any language, reflecting the movement's internationalism.[6]