Jim Carrey has a new children's book out today called, How Roland Rolls. It's the story of a wave and Jim Carrey says it puts everything he believes into a short story that both kids and grownups will love.

He wrote the book for his grandson, Jackson, but he got into the studio with his daughter to write music for this book.

Click here to watch a video on YouTube behind the scenes of making the book and songs!

Today he posted this picture on twitter along with the caption: "How Roland Rolls comes out TODAY but it may be a little too sophisticated for Lloyd and Harry! Yep... THEY'RE BAAAAAACK! ;^•" Jim Carrey and Jeff Daniels are back on set for Dumb and Dumber To!