split one's sides

(redirected from laugh one's head off)

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.
See also: side, split

split one's sides

To laugh heartily.
See also: side, split
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