A hilarious, sweet book. Thanks to Michelle C for recommending it. It's a bit hard to describe, though... so I'll just quote from the book flap.
"Twelve-year-old Gratuity 'Tip' Tucci is assigned to write five pages on 'The True Meaning of Smekday' for the National Time Capsule contest, and she's not sure where to begin: when her mom started telling everyone about the messages aliens were sending through a mole on the back of her neck? Maybe on Christmas Even, when huge, bizarre spaceships descended to Earth, and aliens -- called the Boov -- abducted her mother? Or when the Boov declared Earth a colony, renamed it 'Smekland' (in honor of glorious Captain Smek) and forced all Americans to relocate to Florida via rocketpod?"