(intransitive, or, transitive) To crease or become creased.
He fell flat on his face and everyone just creased up!
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(informal, slang, UK, intransitive) To laugh (or make someone laugh) uncontrollably.
The last scene creased me up.
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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.