Milo accidentally gives away his mom’s priceless rock concert T-shirts to a school clothing drive and must fight Murphy’s Law to get them back.
- "Weird Al" Yankovic as Milo Murphy
- Sabrina Carpenter as Melissa Chase
- Mekai Curtis as Zack Underwood
- Kate Micucci as Sara Murphy
- Pamela Adlon as Brigette Murphy
- Dan Povenmire as Vinnie Dakota
- Jeff "Swampy" Marsh as Balthazar Cavendish
- Mark Hamill as Dr. Block
- Vincent Martella as Bradley Nicholson
- Dee Bradley Baker as Diogee
- Perry the Platypus from Phineas and Ferb, another show created by Dan Povenmire and Jeff "Swampy" Marsh, makes a cameo appearance in this episode as a pyjama, along with the Perry the Platypus Theme. Also, the song S.I.M.P. (Squirrels In My Pants) can be heard at the end of the episode. These three allusions mark the second time that a Phineas and Ferb reference appears in Milo Murphy's Law, following "Murphy's Lard".
- April 27, 2017 (Portugal)