split one's sides

Also, laugh one's head off. Be extremely amused, laugh uproariously. For example, That comedian had us splitting our sides, or Jane laughed her head off when she saw Rob's costume. The first of these hyperbolic terms dates from about 1700.

split one's sides

To laugh heartily.

Common Names:

Name	Pronounced	Usage
Tibby	TIB-ee	English
Pran	-	Indian, Hindi
Teodoro	te-o-DO-ro (Italian), te-o-DHO-ro (Spanish)	Italian, Spanish, Portuguese
Atwood	['ætwud]
Vergil	VUR-jəl	English
Dafne	DAHF-ne	Italian