Green’s Dictionary of Slang

choc-box n.

[play on SE/chocolate adj. (2) + box n.1 (1d)]

the anus.

Show quotations
[Scot]I. Welsh Trainspotting 239: Ah might end up whappin it up the wee cunt’s choc-box yit.
[Scot](con. 1980s) I. Welsh Skagboys 500: Speaking of brownie points, a word ay advice, ram it right up her fuckin choc box.
[Scot]I. Welsh Decent Ride 363: Ah’ve whapped it up a few choc-boxes in ma time . . . jist burds, mind.