Green’s Dictionary of Slang

c.b. n.1

also c&b
[abbr. used in S&M contact advertisements to advertise ‘cock and balls torture’]

cock and balls; also attrib.

Fetish Information Exchange ‘Netspeak’ at Fetish.com 🌐 CB or C+B Cock & Ball. CBT Cock & Ball Torture.
‘The soc.subculture.bondage-bdsm FAQ list’ at Unrealities.com 🌐 ‘C&B play’ stands for cock & ball play. ‘Genitorture’ stands for ‘genital torture’. This is a subject that makes some men clutch their nuts and run in fear, and makes other men instantly erect and greedy for more.
[US] small-ad in E. White My Lives 122: VGL XXX horny dominant top WS, FF, C&B torture, BB, verbal.
[NZ]W. Ings ‘Trolling the Beat to Working the Soob’ in Int’l Jrnl Lexicog. 23:1 74: ‘I dnt bttm for knky fun eva. I do ws,f,tt, cb. nt n2 receiving pain’. Translated this means: I don’t receive anal sex. I offer water sex, fisting, tit torture, cock and ball torture, but I am not into receiving pain.