What it means
To go on a bender means going way past a normal night out and disappearing into a heavy drinking spree that can last a day or several. It’s the kind of booze mission where one pint turns into a blurry saga, and you come back looking haunted, fragile, or weirdly proud. People also use it for other forms of excess, but drink is the default.
Usage examples
"After the exams they all went on a bender to celebrate."
"He went on a three-day bender after the breakup and resurfaced looking like a ghost."
"We only meant to have one, but somehow it turned into a full bender till Sunday lunch."
"He went on a three-day bender after the breakup and regretted every minute."
"We were only meant to grab a couple after work, then Darren went full goblin mode and dragged us into a two-night bender."
Where it comes from
Bender has been used in English since the nineteenth century for a stretch of heavy drinking. The best backed link is to bend, from the image of bending your elbow again and again while knocking drinks back. That old elbow joke stuck, then the word settled into meaning a full-on booze spree.
Other ways to say it
This expression also appears in
