Britain, 1747: dew of the kind that settles on mountains—Scotland, 1816: whisky or other spirit, especially when home-made or illicit (originally in reference to whisky distilled in the Highlands, i.e., in the mountainous region of Scotland)
UK, 1882—‘penny’ refers to inexpensiveness, and ‘puzzle’ to the mysterious nature of the ingredients—perhaps also in humorous allusion to ‘penny puzzle’ in the sense of a puzzle-card sold on the street for one penny
also ‘in a wad’, ‘in a knot’, etc.—to become unduly agitated or angry—the plural noun ‘panties’ refers to short underpants worn by women or girls—American English, 1975
one who rides a surfboard with the right foot forward instead of the left—USA, 1960 (as a verb)—here, ‘goofy’ seems to be related to prejudice against left-handedness and left-footedness
the style of language considered characteristic of crossword clues or solutions—USA, 1925—from the noun ‘crossword’ and the suffix ‘-ese’, forming nouns designating the style of language considered characteristic of the first element
a game in which players must obey a leader’s instructions if, but only if, they are prefaced with the words ‘O’Grady says’—UK, 1917—game invented during World War One as a play-way for conducting physical exercises and drill in the British Army