the pleasure of close intimacy in a couple (idiom)
sexual intercourse
Definitions (粵典–words.hk)
名詞
比喻夫婦交合嘅歡愉 the pleasure of close intimacy in a couple in sex; literally: pleasure of fish and water
Definitions (Wiktionary)
phrase, euphemistic, figuratively, idiomatic
the pleasure of close intimacy between a couple; (the pleasure of) sexual intercourse; harmonious and joyous life of a married couple