- (the) threepennies
- BritishdiarrhoeaRhyming slang on the duodecimal threepenny bits (for shits), useful as currency apart from their insertion in Christmas puddings to be prodded for eagerly on Christmas Day before you swallowed them or broke a tooth.Now obsolete apart from among those ancient enough to remember the ritual prodding.
How not to say what you mean: A dictionary of euphemisms. R. W. Holder. 2014.