be in stitches belch blow open blow out blurt blurt out break out break up burst forth burst into laughter burst out laughing burst with laughter bust a gut cachinnate cackle chortle chuckle crow discharge disgorge ejaculate eject eruct erupt exclaim giggle go into convulsions guffaw ha-ha hee-haw hee-hee ho-ho horselaugh hurl forth laugh laugh it up laugh outright nearly die laughing roar roar with laughter shake like jelly shake with laughter shout shriek snicker snort spew split split with laughter spout tee-hee titter vomit yuk-yuk