hump strap
n.— «The second is a trick I use to make moving furniture easier on your back. Fold your 25-foot extension cord into fourths…, creating a 6-foot “hump strap.” This allows you to pick up and move heavy objects, like this hide-a-bed…, with less strain on your back.» —“Thoughts and Tips For a New Year” by Michael Hetts Floor Covering Installer (Woodland Hills, California) Jan. 19, 2001. (source: Double-Tongued Dictionary)