bust out laughing

bust out laughing

To start laughing suddenly or uncontrollably. The kids busted out laughing when the clown fell down on stage.
See also: bust, laugh, out

bust out laughing

Fig. to start laughing suddenly. Bust is a nonstandard form of burst. I busted out laughing when I saw him in that get-up. The bridegroom was so nervous, it was all he could do not to bust out laughing.
See also: bust, laugh, out