USA, 1927: a minority group regarded as eccentric, extremist or fanatical, or simply stupid—but originally, UK, 1873: a woman or girl’s hairstyle in which the front is cut straight and square across the forehead
U.S. slang, 1935—a photograph of a person’s face, especially in police or other official records—from ‘mug’ (a person’s face) and ‘shot’ (a single photographic exposure)
sexual intercourse—Scotland, 1968—reduplication (with variation of the initial consonant and addition of the suffix ‘-y’) of the noun ‘rump’, denoting a person’s buttocks
a woman’s topless swimsuit, consisting of the lower half of a bikini—from the prefix ‘mono-’ and ‘-kini’ in ‘bikini’, reinterpreted as containing the prefix ‘bi-’—coined in 1946 by French clothing designer Louis Réard
a raised band across a road, designed to make motorists reduce their speed—1961—based on the image of a policeman lying asleep in the middle of a road—in early use often with reference to Jamaica
to walk with arms extended, elbows and wrists bent at right angles, one arm up, one down—1962 in To Kill a Mockingbird—refers to the representation of the human body by the ancient Egyptians
1691—to expose the flaws in something such as a law, a policy, an argument or a belief—these flaws are likened to holes large enough to drive a coach and horses through them
a state of depression or despair—1893—a shift in meaning of the British-English expression ‘blue funk’, denoting a state of extreme nervousness or dread (the original meaning in American English)