An accidental bump starts a gigantic fight in the schoolyard when the students forget to use their heads and use their fists instead.
- ISBN10 1590193253
- ISBN13 9781590193259
- Publish Date 1 September 2003 (first published 1 May 1991)
- Publish Status Unknown
- Out of Print 11 April 2013
- Publish Country US
- Imprint Ipicturebooks
- Format eBook
- Language English