sack, back and crack noun a treatment for removing a man’s body hair by waxing it and stripping it off UK
Cheeky Victoria Beckham has revealed why husband Davis is such a smooth operator in the bedroom–it’s all down to his intimate waxing sessions. She’s joked that David “enjoys” an agonising treatment known as a “sack, back and crack” to remove unwanted body hair. — DailyStar, p. 5, 26 December 2003