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Ask cheeks near cunnyborough; the repartee of a St. Gilse’s fair one, who bids you ask her backside, anglice her a-se. A like answer is current in France: any one asking the road or distance to Macon, a city near Lyons, would be answered by a French lady of easy virtue, ‘Mettez votre nez dans mon cul, & vous serrez dans les Fauxbourgs.’
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Cheek by Jowl * Cheese-toasterNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes
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Francis Grose was independently wealthy, having inherited money from his father, a jeweller. Finding himself overspending, he published a number of books; his Provincial Glossary seems to have been the starting-point for the Vulgar Tongue reproduced here.