Green’s Dictionary of Slang

C&A adj.

[rhy. sl. = gay adj. (6); ult. C&A, a chain of clothing stores in the UK]

homosexual.

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[US]Maledicta II:1+2 (Summer/Winter) 117: Also in evidence were department stores in London such as C & A = ‘gay’ (homosexual) – with ‘Cocksucker and Arsehole’ explaining the initials – and Barker’s = starkers (‘nude’, US stark naked).