Okay, let's say you're playing with some blocks and building a tall tower. You're having a great time, but then your little brother comes in and accidentally knocks over your tower. You get really upset because you worked hard to build it and now it's all messed up.
In computer programming, things like this can happen too. We call them "exceptions" - a fancy word that means something unexpected happened and the program can't keep doing what it was trying to do.
Just like with your tower of blocks, when an exception happens in a computer program, we need to make sure no information gets lost or messed up. This is called "exception safety." It means making sure the program can handle an exception in a way that doesn't make things worse.
So let's say you're programming a website and someone enters their name wrong when filling out a form. That could cause an exception, but your program needs to be ready for it. You wouldn't want the user's information to get lost or corrupted in some way just because of something as simple as a typo.
Exception safety is a really important part of programming to make sure everything keeps running smoothly no matter what surprises come up.