Etymology Probably onomatopoeic. Compare jig and jiggle.
1
sexual intercourse, sex
Chiefly pidgin English
JIG JIG. Intercourse. American soldiers heard it as zig zig in France and also in New Caledonia and elsewhere in the South Pacific.1948, Eugene B. Vest, “Native Words Learned by American Soldiers in India and Burma in World War II”, in American Speech, volume 23, number 3/4:
‘Pretty girl jig jig by-and-by.’1948, Graham Greene, The Heart of the Matter:
4 more examples
‘No jig-jig here,’ Wordsworth said. ‘If you wan jig-jig you take her to hotel.’1969, Graham Greene, Travels with My Aunt:
I infuriated them when they came to me by answering only the British officer and acting as if the French one could only understand music-hall pidgin-Franglais (he spoke English perfectly well). “Nice country, non? Mini-skirts, mademoiselles, oo la la. It rains always but plenty jig-jig, wee-wee — you wanna go?”1996, Albert Meltzer, I Couldn't Paint Golden Angels:
“Only twenty-eight days more, I go to fucking India. Plenty jig-jig. No more whanimidi!” Abdullah gestured with his hands to signify masturbation. “Jig-jig” clearly meant the preferred alternative.1998, David Marion Wilkinson, The Empty Quarter:
“Ah! you want jig-jig?” “No, goddamnit, I don’t want no fucking jig-jig,” Jordan replied impatiently. The boy’s vocabulary in English was limited to ‘You buy, hubba-hubba, booze-o,’ and a few other important phrases leading to a multiplication of numbers equaling yen.2002, Jan Merlin, Ainoko: