Green’s Dictionary of Slang

1. (UK Und.) riding.

1608		Dekker Lanthorne and Candle-Light Ch. 1: Prigging, Riding.
1610		Rowlands Martin Mark-all 40: Prigging riding.
1665		Head Eng. Rogue I 51: Prigging, Riding.
1674		Head Canting Academy (2nd edn).
c.1698		B.E. Dict. Canting Crew n.p.: Prigging Riding.
1725		New Canting Dict. [as cit. c.1698].
1754		Scoundrel’s Dict. 19: Riding – Prigging.
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.

2. having sexual intercourse.

1612		Dekker O per se O M: In their nasty Libkens, (where they lye like Swine) being of nothing, but Wapping, Niggling, Prigging, Clowing, Filching, Cursing, and such stuffe.
c.1698		B.E. Dict. Canting Crew n.p.: Prigging [...] Lying with a Woman.
1725		New Canting Dict. [as cit. c.1698].
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.
1882		Cremorne I 28: They may call it prigging if they like— but I call fucking, cunt-sucking and buggering [...] dam’d hard work.