bend one off

A crude British and Australian colloquial phrase meaning to defecate. Like much toilet humor slang, it favors the oblique and physical — the verb 'bend' evoking the physical effort sometimes involved. It's the kind of expression you'd hear in a pub conversation or a locker room, where euphemistic but still vulgar language is the preferred register. More common among older generations and working-class speakers in the UK and Australia, it's blunt, unglamorous, and entirely functional.