The massively funny fifth book in the bestselling and award-winning Diary of a Wimpy Kid series. Greg Heffley has always been in a hurry to grow up, but is getting older really all it's cracked up to be? Suddenly Greg is dealing with the pressures of boy-girl parties, increased responsibilities, and even the awkward changes that come with getting older.

Y pumed teitl yng nghyfres arobryn dyddiadur hynod ddoniol y llipryn o fachgen ysgol, Greg Heffley, sy'n ysu i dyfu'n ddyn. Ond efallai nad yw partïon bechgyn-a-merched, cyfrifoldebau ychwanegol a newidiadau corfforol yr arddegau yn fêl i gyd! Cyfieithiad Cymraeg o The Ugly Truth gan Owain Siôn.