the buttocks, the backside.
|Dict. Canting Crew n.p.: Fun [...] an Arse.|
|Compleat and Humorous Account of Remarkable Clubs (1756) 100: Loudly repeating some new Verses, hammer’d out of his dull Noddle for next Bumfodder Bill, that it might first make People laugh till they were ready to bedung themselves and do them the Service of a Paper-Muckender, to mundify their Funs.|
|New Canting Dict. n.p.: fun is also used for the Backside; as, I’ll kick your Fun; i.e. I’ll kick your Breech.|
|, , ,||Universal Etym. Eng. Dict. [as cit. 1725].|
|, ,||Classical Dict. of the Vulgar Tongue.|
|Grose’s Classical Dict. of the Vulgar Tongue.|
|Classical Dict. of the Vulgar Tongue ms. additions .|