CBB refers to Cock and Ball Bondage, is a form of bondage where a flaccid penis is tied up with rope or leather to restrict the flow of blood into it so that it can't engorge and get hard.
The Dominant in the D/s relationship wraps their submissive's flaccid penis with rope or leather to restrict the flow of blood into it so that it can't engorge and get hard.
His Mistress was upset that he didn't follow her instructions and got out her crafting kit, few minutes later and he was in CBB for the rest of the weekend
Honey when you get home I have some CBB for you to do then we can get it on.
or
Honey if you want sex tonight you will have to complete the CBB list I have for you.