Meaning of suck the monkey | Babel Free

Definitions

1. To surreptitiously drink alcohol from a cask through an inserted tube.
   slang
2. To drink from a coconut filled surreptitiously with rum, etc.
   slang

Examples

“A new farce, called "The Wigwam," was produced at the Lyceum Theatre on Monday night. [...] As might naturally be expected, Cora has another lover, one Mingo (Mr. Oxberry), known as the "Monkey's Uncle," from his habit of "sucking the monkey."”

CEFR level