sidesplitter
/ˈsaɪdˌsplɪtər/
noun
- A joke or story that is extremely funny and causes uncontrollable laughter.
- The comedian's new routine is a real sidesplitter; I haven't laughed that hard in years.
- My grandfather told a sidesplitter about a talking dog that had everyone at the dinner table in tears.
- She shared a sidesplitter at the party that left people clutching their stomachs.
Synonyms