Green’s Dictionary of Slang

(orig. US black) a drinking spree.

1942		Berrey & Van den Bark Amer. Thes. Sl.
2005		creativepro.com 🌐 Some unfortunates end up going on a drinking spree, and a number of terms have been coined to describe such binges. You can go on a bender, on a bat, on a toot, on a jag, a booze fight, or simply on a drunk.