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bash one out

Vulgar British slang meaning to masturbate.

ˈbæʃ ˈwʌn ˈaʊt152 viewsLast reviewed Jun 29, 2026+ Add a definition
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#1·Apr 28, 2026

Vulgar British slang meaning to masturbate. Direct and crude, it belongs to the same family of blunt British expressions as 'have a wank' or 'knock one out.' The verb 'bash' lends it a rough, unrefined energy. It is used almost exclusively in informal speech or comedic contexts and is not considered polite in mixed company.

He'd been in the bathroom long enough that his flatmates started making jokes about him bashing one out.
Origin: From 'bash' (to strike or beat forcefully) + 'one out,' a pattern common in British slang for self-pleasuring acts. Editorial expansion authored on Slangora.
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#2·Apr 26, 2026

(slang, vulgar) To masturbate.

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