笑到收不住
完全同一個畫面，只是掙脫出去的變成笑聲：整桌人彎著腰、笑到流眼淚、話都說不出來。這是一個意思上的連結，不是說笑的用法在歷史上從崩潰的用法「長出來」的證據。
noun · B2
If someone is in hysterics, they are laughing so hard that they cannot stop.
笑到停不下來
核心畫面
Think of a feeling that has got away from the person holding it, like a dog that has pulled the lead out of someone's hand. The feeling is running and the person is being dragged along behind it. Which feeling it is matters less than the fact that nobody is steering any more.
可以想成一種情緒從人的手裡掙脫了，像狗把牽繩扯走，人只能被拖著跑。重點不在那是什麼情緒，而在「沒有人在控制了」。這也…更多收起
可以想成一種情緒從人的手裡掙脫了，像狗把牽繩扯走，人只能被拖著跑。重點不在那是什麼情緒，而在「沒有人在控制了」。這也是為什麼同一個字既可以講嚇到崩潰，也可以講笑到停不下來——兩邊的畫面其實一樣，只是掙脫出去的東西不同。這個字也永遠是複數形，像那股情緒本來就不只一股。From the picture
Also in this word
noun · B2
A state in which someone completely loses control of how they act and feel, because they are very upset, frightened or excited.
情緒失控（大哭大叫、停不下來）