used as an interjection to assert truthfulness, honour or sincerity—USA, 1851, as ‘honest Indian’—perhaps alludes to the fact that, in their past interactions with Europeans, Native Americans had to give assurance of their good faith
a person with facial acne—Californian high-school slang, 1963—in this expression, the pimples caused by facial acne are likened to slices of pepperoni on a pizza
to criticise or attack somebody aggressively or decisively; to target an adversary’s weakest or most vulnerable point—USA, 1879—the image is of attacking a person fatally in the throat or neck, where the jugular vein runs
to go away and stop being a nuisance—chiefly used in the imperative as a contemptuous dismissal—USA, 1883—the image is of somebody jumping into a lake and drowning
extremely large, huge, enormous—USA, 1967—of uncertain origin; probably a factitious adjective coined on the suffix ‘-ous’, influenced by ‘hugeous’ and ‘monstrous’, and perhaps by the stress-patterns of ‘stupendous’, ‘tremendous’, etc.
a woman who had no qualities other than attractiveness, with connotations of low intelligence, or of flightiness, or of low social status and poverty—second half of the 19th century, chiefly in stories by women writers
tap-water likened to a grand cru—in reference to ‘château’ in names of wines of superior quality—in French ‘Château-la-Pompe’ (i.e. ‘Château-the-Pump’), ‘pompe’ denotes a device for raising water
wine, especially cheap wine of inferior quality—UK, 1973—from ‘château’ (as used in names of expensive wines of superior quality made at vineyard estates) and ‘plonk’, denoting cheap wine of inferior quality
to do everything possible to achieve a result or effect—UK, 1865 (as ‘to pull out a few more stops’)—alludes to pulling out all the stops of an organ in order to produce a full and thrilling sound