Guānzhòngmen bèi zhège xiǎopǐn dòu de qiányǎng-hòuhé.
The audience was in stitches from the comedy sketch.
Tips
usage
Almost always used with 笑得 (xiào de, 'laughed so hard that…'). It's the go-to idiom for describing someone laughing uncontrollably — you'll see it constantly in descriptions of comedy shows and 春晚 (Spring Festival Gala) sketches.