Captain Underpants and the Invasion of the Incredibly Naughty Cafeteria Ladies from Outer Space

Blurb

Captain Underpants and the Invasion of the Incredibly Naughty Cafeteria Ladies from Outer Space is the third book of the Captain Underpants series by Dav Pilkey. The series of American children's books are about two fourth graders, George and Harold, and their mean principal Mr. Krupp, who can turn into Captain Underpants. It was published on September 1, 1999, seven months after the previous book and exactly two years after the publication of the first book. It is the first book to feature the use of 'Extra-Strength Super Power Juice', which is used to give Captain Underpants super powers later in the book.