Moll Peatley’s jig, n. — Green’s Dictionary of Slang

Moll Peatley’s jig n.

also Moll Peatley’s jigg, Moll Peatly’s gig, …jigg

[? the name of a well-known contemporary prostitute + gig n.² (1)/SE jig]

sexual intercourse, ‘a rogering bout’ (Grose, 1788).

1772		Bridges Burlesque Homer (3rd edn) 126: Whilst thus they danc’d moll peatley’s jig.
1788, 1796		Grose Classical Dict. of the Vulgar Tongue (2nd, 3rd edn) n.p.: Moll Peatly’s Jigg. A rogering bout.
1811		Lex. Balatronicum [as cit. 1788].
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue [as cit. 1788].