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1972, short for tits and ass (a phrase attributed to Lenny Bruce), in reference to U.S. mass media; earlier it was medical shorthand for "tonsils and adenoids" (1942).
: They turned it into a T and A shownoun phrase
A display of female bosoms and bottoms; a show featuring such display; cheesecake: the realm of feminine esthetics or, as it is known in the profession, TA/ To enliven their product they call for T and A (1972+)
[fr tits plus ass]