Green’s Dictionary of Slang

to have sexual intercourse.

1725		View of London & Westminster (2nd part) 49: [in a list of prostitutes] Miss Jiggle [Is Visited] By a D[octor?].
1832		Satirist (London) 8 Jan. 13/2: The Paris wits are giggling, O! / At the niggling, figgling, wriggling, O! / [...] / While the good old dance is jiggling, O!
1941–52		in G. Legman Limerick (1953) 2: The sister would giggle / And wiggle and jiggle.
1941		C. Brackett & B. Wilder Ball opf Fire [film script] We’ll be stepping. me and this smooch. [...] You know, hit the jiggles for a little rum boogie [...] we’re going to have some hoytoytoy.