Green’s Dictionary of Slang

(Aus./US) of a teenage couple, parking a car in a discreet spot for petting and possible intercourse.

1945		‘Whoa Back, Gee Back’ in Mess Songs & Rhymes of the RAAF 33: I took my girl out parking, I laid her on the some bags, / But when I started fooling around, Found she had the [rags].
1967		Banchero & Flinn ‘Sociology and College Sl.’ in AS XLII:1 53: river banking. The equivalent of parking (i.e., necking, etc., in a parked car).
1970		(con. 1950s) H. Junker ‘The Fifties’ in Eisen Age of Rock 2 (1970) 102: In that case [...] he might suggest catching a flick. The passion pit. Parking.
1974		G.V. Higgins Cogan’s Trade (1975) 41: I used to go fuckin’ parking with this broad [...] I used to spend fuckin’ hours tryin’ to get my fuckin’ bare hand on her fuckin’ bare tit.
1984		W.D. Myers Outside Shot 124: ‘How she look?’ I asked. ‘She ain’t that bad,’ Go-Go said. ‘And I think her favorite pastime is parking’.