Quote Originally Posted by iCake View Post
We have a set phrase for that - лопнуть от смеха

Я чуть не лопнул от смеха
Aha, thanks! I didn't immediately recognize the verb лопнуть, but Викисловарь had a good example sentence -- "Шарик надували до тех пор, пока он не лопнул" -- as well as a photo of a lightbulb bursting!

"I laughed until I split my sides" (or "until my sides split") would be the nearest equivalent expression in English.