Gram Gram (or Armpit Gram Gram) is a character who made her debut in "Charm School." She is the grandmother of Armpit Willy who lives at Boopelite Assisted Living.
Like her grandson, Gram Gram also has her armpit hair which extends the longest all the way out of the window. Goat thought that the tree root is Ol' Rootie that she hangs out with, as it turns out that "Ol' Rootie" is really her longest underarm hair. She is seen sitting in her rocking chair.
Gram Gram is grayish-green in color and gray hair. She has black lipstick on and wears her eyeglasses. She wears her purple dress and light purple slippers. She also has the longest armpit hair that extends all the way outside of her window.