Okay, Scholastic Books is doing a terrible job of printing these books - they literally fall apart with one reading!! Anyway, boys (especially) love the gross out humor.  I have SIX Captain Underpants books which need a home - most of them have loose pages, but I have checked and all the pages are there.  I will take 2 credits for all six of these books:

Captain Underpants and the...

Preposterous Plight of the Purple Potty People (ISBN: 0439376149)

Wrath of the Wicked Wedgie Woman(ISBN: 0439050006)

Invasion of the Incredibly Naughty Cafeteria Ladies From Outer Space (ISBN: 04390499962)

Perilous Plot of Professor Poopypants (ISBN: 0439049989)

Attack of the Talking Toilets (ISBN: 0590634275)

The Adventures of Captain Underpants - The First Epic Novel (ISBN: 0590846280)