Green’s Dictionary of Slang

to perform cunnilingus.

1966		Trimble 5000 Adult Sex Words and Phrases.
a.1968		‘The Whorehouse Bells Were Ringing’ in G. Logsdon Whorehouse Bells Were Ringing (1995) 148: I will suck your juicy prick, / While you lick out my flue.
1971		T. Rhone Smile Orange I i: You take dem to Mass Jim place, or down by di beach, and lick out.
1998		I. Welsh Filth 236: You n me n that Abo bird I used tae shag [...] She licked you oot.
1999		Roger’s Profanisaurus 3 in Viz 98 Oct. 19: lick out 1. v. That which is done by a small child to a bowl of cake mix. 2. v. That which is done by a mustachioed porn star to a haddock pastie.
2005		Jade LB Keisha the Sket (2021) 32: I was cumin all in his mouf an he stil licked me out.
2012		(con. 1980s) I. Welsh Skagboys 40: Blew the whole jubilee Gang [...] Went hame n licked the missus oot tae prove thit eh swng baith weys.
2018		I. Welsh Dead Man’s Trousers [18]: — Did she get ye licking her oot?