Shoo Fly, Don't Bother Me
Shoo Fly, Don't Bother Me or Shew Fly is a folk song from the 1860s that has remained popular since that time. It was sung by soldiers during the Spanish–American War of 1898, when flies and the yellow fever mosquito were a serious enemy.
Source: Wikipedia — Shoo Fly, Don't Bother Me (CC BY-SA 4.0)