GP-Effed
Also, "GPF-ed." This refers to the annoying ability of a gps devices to route you to dead-end roads, through the 'hood, or other places that are in no way logical to get from point "a" to point "b."
"Sorry I'm so late! I got GP-Effed and ended up going thirty miles down some back road to get here!"
"Did you hear banjos?"
"Did you hear banjos?"