I didn't think this was a laugh out movie in my opinion. But it kept me entertained throughout. This has most of the formulaic elements for a Asian comedy, but for the most part it actually works. This takes on the what if scenario, of what a granny would do if she got her youth back to when she was in her 20's. Sure a lot of stuff is far-fetched and the dialogues not completely believable. But for a comedy such as this, it still works out when you think about it. Eun-kyung Shim did a good job for the most part impersonating a granny, although some parts can be rough around the edges. But that actually makes this movie work for the better in a sense. This is a inside joke movie, where the audience knows what is going on but the characters have no idea. But like I said, most of the formulaic elements work. The thing is, everyone wants a second chance to accomplish the things they may have missed out on after realizing. So for teens, they can get a good laugh and adults can get some amusement out of this because they can be able to connect. However what matters is to let go of the things you can't change and do the best you can in the present.