To start laughing suddenly or uncontrollably. The kids burst out laughing when the clown fell down on stage. I couldn't help but burst out laughing when Carl ripped his pants trying to do those ridiculous dance moves. See also: burst, laugh, out Farlex Dictionary of Idioms. © 2022 Farle...
Consult a doctor if you’re laughing uncontrollably for no reason. If you really can’t stop yourself from laughing and can’t figure out why you’re doing it, consult a doctor. You may have something called an involuntary emotional expression disorder (IEED), which can be treated with medi...