holy water
Refers to water blessed for religious use, primarily in Christian contexts.
I received holy water at the church.
Vulgar slang, often used in contexts related to urolagnia. Not appropriate in polite conversation.
I saw the word 'holy water' on a weird online forum.
From 聖 (holy) + 水 (water). The vulgar slang sense is a euphemistic or ironic extension of the literal meaning.