half past a monkey’s ass, phr. — Green’s Dictionary of Slang

half past a monkey’s ass phr.

[i.e. midnight is pitch black]

(US black) half past midnight.

1996–2000		(con. 1940s) Deuce Ofay Productions ‘The Jive Bible’ at JiveOn.com 🌐 Half past a monkey’s ass: n. Twelve thirty.
1998–2002		‘Famous Monkey Sayings’ Dancing Monkey Saloon 🌐 What time is it? Half past a monkey’s ass, a quarter to his balls.
2015		P. Beatty Sellout (2016) 42: The time is always, ‘Half past a monkey’s ass and a quarter to his balls’.