Definition & Meaning of "elephant's trunk"in English

What does "elephant's trunk" mean in Cockney rhyming slang?

The structure uses the rhyming pair "elephant's trunk" to stand for "drunk," following the typical Cockney pattern of replacing a word with a phrase that rhymes with it. It is used in Cockney rhyming slang (London, UK) to mean intoxicated from alcohol, often shortened to just "elephant's." People typically say "He's got elephant's trunk again" or "They were absolutely elephant's last night." The term originated in mid 20th century London rhyming slang, and remains a recognizable example, though less common than "pissed" or "plastered" in everyday speech.