intj

• (Scotland, obsolete) Used by people in medieval Scotland to warn passers-by of waste about to be thrown from a window into the street below. The term was still in use as late as the 1930s and 1940s, when many people had no indoor toilets.
  "[A]ll the chairs in the family are emptied into this here barrel once a-day; and at ten o'clock at night the whole cargo is flung out of a back windore that looks into some street or lane, and the maid calls Gardy loo to the passengers, which signifies, Lord have mercy upon you! and this is done every night in every house at Haddingborough; so you may guess, Mary Jones, what a sweet savour comes from such a number of profuming pans […]"

noun

• (Scotland, historical) A cry of "gardyloo".
  "What do the polished inhabitants of Carrubber's close care for all the taunts that can be uttered by the mouths of all the tobacco-chewing, bacon-eating bagmen who chatter no intelligible language of any country, about "gardy loos," and Caledonian cremonas?"
• (figurative) Caution, warning.
  "Released but a few weeks before Gremlins, this film drew only foreshadowings of concern that spiraled up into hysterical gardyloos when Gremlins made its debut."