put the mockers on
1 put an end to; thwart.
2 bring bad luck to.
☞ This expression originated as early 20th-century British slang. An Australian variant is put the mocks on.
❶ 1966Lionel DavidsonA Long Way to Shiloh Shimshon and the judo both seemed to have put the mockers on this particular idyll. We left soon after.
❷1970Joyce PorterDover Strikes Again This investigation had got the mockers on it from the start.