Cosmic - by Frank Cottrell Boyce

Liam is tall for his age.  He's 12, and just wants to be treated like a kid, but he looks so old that waitresses won't even let him see the kids' menu.  The school bus driver won't pick him up, because he thinks he's an adult.  The guy at the Porsche dealership gives him the keys for a test drive, because he think's he's a dad. Well, it's not ALL bad, it seems.

When Liam and his schoolmate Florida decide to act like father and daughter, it turns out to be pretty fun.  The faint mustache Liam has sprouted help them pull it off, and they get into all sorts of mischief, including a trip to China to visit a brand new theme park.  Before long, though, things get a bit out of hand, and Liam is telling his story... from outer space.  Okay, things got REALLY out of hand!

This is a hilarious story of one boy who isn't who everyone wants him to be, but who can't figure out who he really is until it's a bit too late.  If you're a bit tall compared to your peers, this book can be a warning.  For the rest of us, it is just a fun yet thoughtful adventure.