Douglas Harper's Etymology Dictionary
T and A
1972, short for tits and ass (a phrase attributed to Lenny Bruce), in reference to salacious U.S. mass media; earlier it was medical shorthand for "tonsils and adenoids" (1942).
Usage examples of "t and a".
That was why, three months later, to kid Downey he had chosen to wear a Cal Tech baseball jersey with an orange block T and a blue and white Dodger cap to offset Downey's California Angels cap, with its logo of the Dodgers' cross-town rivals.