expression, ichidan verb
to convulse with laughter; to split one's sides laughing
Idiomatic expression describing uncontrollable laughter so intense that one's stomach muscles twist. Often used in the form 腹の皮がよじれるほど笑う.
彼の冗談に腹の皮がよじれるほど笑った。
I laughed so hard at his joke that my sides split.
あの漫才は腹の皮がよじれるくらい面
That comedy duo was so funny I nearly convulsed with laughter.