- bung up and bilge free
- BritishcopulatingNaval usage, from the recommended way of storing a cask of rum aboard ship, whence anything in good order. The bung puns on the orifice rather than on a method of contraception:I used to be bung but now I'm pill. (Bradbury, 1976 — referring to contraception)
How not to say what you mean: A dictionary of euphemisms. R. W. Holder. 2014.