burst out laughing/crying/singing etc• At that point I burst out laughing.• Charles didn't respond and after a frozenpause, she collapsed into a chair and burst out crying.• He did it so cleverly that you would think it was the real thing - until he burst out laughing.• I said and burst out crying.• Julie, surprised, burst out laughing.• The whole group bursts out laughing.• The woman and children burst out laughing again, getting up from the table and crowding round me.• I came down the steps of the Ashbery that morning and burst out laughing at the heat.