Green’s Dictionary of Slang

trolley (and truck) n.

[rhy. sl. = fuck n. (1a). Note naval use trolley-oggling, acting as a voyeur]

an act of sexual intercourse.

1960		J. Franklyn Dict. of Rhy. Sl.
1972		Dodson & Saczek Dict. of Cockney Rhy. Sl.
1992		R. Puxley Cockney Rabbit.