||April 20, 1990 at Art of Ears Studio in San Francisco, U.S.
||Green Day, Andy Ernst
|Green Day chronology
Slappy is the second EP from Green Day, released in the Summer of 1990 through Lookout! Records.
- Green Day
- Additional Performers
- Aaron – backing vocals, teeth noise on Knowledge
- Andro Ernst - engineer, producer
- John Golden - mastering
- Aaron Cometbus - layout, Green Day Bits section
- Al Sobrante - photography on front cover
- Shawn Hughes - photography on back cover
- Green Day - producers
- The dog's real name is Mickey. Slappy was a nickname given to her by Jason Relva.
- Billie Joe's name is incorrectly spelled as "Billy" in one instance in the "Green Day Bits:" section.
- "Why Do You Want Him?" was the first song Billie Joe wrote.