忍俊不住

Explanation: See "help laughing." 　　Source: Fen "track of a wanderer Message" two talkative Zhang Jun humor, recalled last year, and his wife on his way to the case when the Pirates of the case in Gansu, it Renjunbuzhu. " Thesaurus:  be dissolved in [into] tears, cannot help laughing, be unable to stifle a laugh; can’ t help laughing, let loose a banquet of brine, tears and mucus flowing down rapidly, naturally, Spontaneously, quiet or partly suppressed laugh Antonym Group:  forced laughter, find happiness in suffering