"Irish confetti" means: Irish confetti is a darkly humorous American and British slang phrase for bricks — specifically bricks thrown as weapons during a fight or r.... It carries a violent or aggressive reference, so it is worth noting the context. In most cases the word is used jokingly or for emphasis rather than as a sign of real intent. A calm question about where it was heard is usually all that is needed; pay more attention to behaviour and tone than to the word itself.