Wiktionary
bollock naked
a. (context UK vulgar emphatic English) Not wearing clothes.
Usage examples of "bollock naked".
He was determined to maintain his pride and dignity, even if he was stark bollock naked inside a transparent suit.
I wasn't actually sure what effect it would have, and so was pleasantly surprised when all the Legionnaires' weapons, armour, and clothing disappeared, leaving them utterly unarmed, and stark bollock naked.