Green’s Dictionary of Slang

1. to ride; thus prigger n., a rider.

c.1566		Harman Caveat for Common Cursetours in Viles & Furnivall (1907) 84: to prygge to ryde.
1592		Groundworke of Conny-catching A3(b): Hee pryg a praunce, he byng a wast into the darkemans.
1637		Dekker Canters Dict. Eng. Villainies (8th edn) n.p.: prigging, Riding.
1665		Head Eng. Rogue I 51: Prigg, To Ride.
1674		Head Canting Academy (2nd edn).
1688		R. Holme Academy of Armory Ch. iii item 68c: Canting Terms used by Beggars, Vagabonds, Cheaters, Cripples and Bedlams. [...] Prigg, to Ride. prigging, riding.
c.1698		B.E. Dict. Canting Crew.
1754		Scoundrel’s Dict. 19: Riders – Prigers.
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.
1842		Boston Satirist (MA) 21 Oct. n.p.: Gently o’er the meadows prigging, / Jean and Colin took their way.

2. to have sexual intercourse [i.e. ride v. (1a), but note prick v.¹ ].

1612		Dekker Canting Song O per se O O2: From thy stampers then remove thy drawers and lets prig in sport.
1637		Dekker Canting Song in Eng. Villainies (8th edn) O2: [as cit. 1612].
a.1674		‘The Rogues . . . praise of his Stroling Mort’ Head Canting Academy (1674) 20: [as cit. 1612].
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.