The Cast of ‘Phineas And Ferb’ Singing “S.I.M.P. (Squirrels in My Pants)”

Dude, we’re getting the band back together! The cast of #PhineasAndFerb sings "S.I.M.P. (Squirrels in My Pants)" at the premiere of the new season. ( TikTok/ @laurenashleybeck)