You can hear people fall about laughing once in a while during the show.

演出期间经常传来观众的大笑.

《简明英汉词典》

Nick's born clown. Just the sight of him is enough to make you fall about laughing.

尼克天生一付丑相,看他一眼就会使你忍不住大笑.

互联网

Just the sight of the clown is enough to make you fall about laughing ( with laughter. )

一看到那个小丑就会使你忍不住了笑.

互联网