Whether it's Jill and her menagerie of animals stacked precariously on a tiny iceberg or a giant, smelly fish head orbiting the Earth (it's an important plot point), Denton's furiously scrawled line drawings milk the silly, gross-out gags for everything they're worth.

But, life is NEVER boring in the treehouse, and emergency shark operations, giant storms, and wooden pirate heads are just the beginning…. This time, the two friends have a whole week to finish their next book, and Andy even knows what it should be about—the story of how he and Terry first met.Boys in particular will like the burping contests, gross creatures, and ridiculous choices that Terry and Andy make throughout the book. But life is NEVER boring in the treehouse, and emergency shark operations, giant storms, and wooden pirate heads are just the beginning . Andy thrives on having an audience: he has worked as a high-school teacher, been the lead singer in a rock band and a stand-up comedian. His books, including the popular Treehouse series, have been hugely successful internationally, winning awards and becoming bestsellers in the UK and the USA as well as in his homeland, Australia.

Kids should be flipping pages faster than a pair of inflatable underpants can skyrocket the young heroes to safety (it's also an important plot point).

Wildly humorous without being smart-alecky or sarcastic, this is a top choice for middle-grade readers. Climb more fun-filled levels by collecting all thirteen books in the seven million-copy-selling series - the perfect chapter books for reluctant readers. It has a bumper car rink, a skate ramp, an antigravity chamber, an ice cream parlor with 78 flavors, and the Maze of Doom—a maze so complicated that nobody who has gone in has ever come out again.