Mommy Fiercest (S05E04)

When Billy's mom, Gladys, spots crow's feet on her face, she panics and locks herself in the bathroom. Desperate to help, Grim uses his scythe to revert Gladys to her youthful self. Excited, she rushes to find Billy, but neither he nor Mandy or Irwin recognizes her. Billy nicknames her "Corn" after the white bread she once gave him. When Corn advises him to focus on homework, Mandy insists he head to the movies instead. A tug-of-war ensues between Corn and Mandy for Billy's attention. Meanwhile, Billy's dad, playing with the scythe, transforms into a child and joins Corn at the movies.