Is it normal to laugh until you cry?
Yep.Totally normal
Yes, laughing until you cry is totally normal. Strong laughter can make your eyes water, and some people are simply more prone to it than others.
A really good laugh can make your eyes tear up because the muscles around them squeeze as you laugh. Sometimes the laugh is so intense that the tears arrive before you even notice you’re crying.
Lots of people do this, though everyone has a different threshold. It usually just means something hit you as very funny—not that anything’s wrong.