(idiomatic, mostly, UK) To escape, flee, or leave a situation or relationship, usually as a result of a shocking or sudden announcement or revelation.
If I told him that I had kids, he'd run a mile.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.