“Oh, you don’t understand? That’s no surprise! You’re just a child, so of course you don’t know. Basically, it’s a phrase that means something isn’t very important or difficult; it’s a way of saying “no big deal.” Like, if you forget to do your chores, you might say “It’s no biggie” instead of “It’s not a big deal.” Here’s a fun fact: the phrase “no biggie” actually has its own entry in the dictionary! Now you know.