- This marks the final appearances of Cornchip Girl, Mundy, Skeens, Gelman and the Lazy Kid until Recess: Taking the Fifth Grade.
- In this episode, Artie Kid has black hair instead of blonde. He's also black/Hispanic instead of Caucasian.
- This episode title is a play on the song "Monday, Monday" by The Mamas & The Papas.
- This episode was paired up with "The Coolest Heat Wave Ever" outside the US.
- This episode is "Lost" from the Latin American dub.
- T.J. Detweiler - Andrew Lawrence
- Vince LaSalle - Rickey D'Shon Collins
- Ashley Spinelli - Pamela Segall-Adlon
- Gretchen Grundler/Adam Able - Ashley Johnson
- Mikey Blumberg - Jason Davis
- Gus Griswald - Courtland Mead
- Dave - Ryan O'Donohue
- Sam - Klee Bragger
- Cornchip Girl - Aria Noelle Curzon
- Ashley Armbruster/Lola Ann - Anndi McAffee
- Ashley Boulet - Francesca Smith
- Chucko - Kenny Blank
- Gelman - Justin Shenkarow
- Cindy/Bradley/Kid #2/Kid #3/Kid #5/Kid #6 - Kath Soucie
- Lazy Kid - Erik von Detton
- Greg Skeens - Danny Cooksey
- Conrad Mundy - Warren Sroka
- Jocko/Lily - E.G. Daily
- Phil/Kid #1 - Justin Jon Ross
- Timmy - Miles Marsico
- Kid #4 - Nicolette Little