Green’s Dictionary of Slang

1. (US) Tijuana, Mexico.

1963		M. Braly Shake Him Till He Rattles (1964) 60: Every once in a while someone drives south, over the border at TJ or Mexicali.
1971		E.E. Landy Underground Dict. (1972).
1981		J. Ellroy Brown’s Requiem 59: That, and go to Tijuana. He loves T.J.
1994		J. Wambaugh Finnegan’s Week 272: This is the first time in my life I’ve driven to T.J. without buying Mexican car insurance.
2001		(con. 1964–8) J. Ellroy Cold Six Thousand 90: Pills got pipelined in: T.J. to L.A./L.A. to Vegas.
2006		D. Winslow Winter of Frankie Machine (2007) 87: ‘Where’s home?’ Abe pointed south. ‘T.J.’.
2010		J. Ellroy Hilliker Curse 7: They headed out to T.J. on the Hollywood Freeway.
2020		D. Winslow ‘Sunset’ in Broken 181: He’s not going to hang around TJ.

2. attrib. use of sense 1.

1990		(con. early 1950s) J. Ellroy L.A. Confidential 178: Old stag books: T.J. venues, women sucking cock, boys sucking cock, up-the-hole close-ups.
2000		F.X. Toole Rope Burns 16: A tough TJ boy, Chango Pedroza.