What is "trucker's hitch"

n. a hitch knot used to tension ropes, often for the purpose of securing loads for transport.

"Trucker's Hitch" is a single by the Norwegian duo Ylvis. It was uploaded onto YouTube on September 16, 2014 and had over 11 million views . The song reached number 10 on the charts in Norway. The song was created as a promo for the duo's TV show "I Kveld Med Ylvis", similarly to their previous hit The Fox (What Does the Fox Say?).