Green’s Dictionary of Slang

hairyfordshire n.

[pun on English county Herefordshire and the pubic hair n. (1)]

the vagina.

[UK]Farmer & Henley Sl. and Its Analogues.
[US]Maledicta IV:2 (Winter) 185: Common examples [of sexual ‘addresses’] include Cockshire, Cock Inn, Cupid’s Alley, Hairyfordshire, Crown and Feathers, Shooter’s Hill, Mount Pleasant, Love Lane, etc.
[UK]Roger’s Profanisaurus 3 in Viz 98 Oct. 15: futtering v. A trip to Hairyfordshire. A bout of front door work.

In phrases