Elderly people are more prone to saying "Up the Gumpstump" than other people. Most particularly when they are stressed about something they have a lot of.
Merged words (gump & stump) believed to be originated from the words gum stump. A gum stump is a stump of a gum or Eucalyptus tree.
Used as an exclamation!
My my Helen, I have fleas up the gumpstump!
Holy toledo! Mutant Ninja Turtles up the gumpstump!