The Lick is a well known jazz lick (stock musical phrase). It has become a commonly recurring musical pattern used in rips on the SiIvaGunner channel.
In music, a lick is a stock pattern or phrase consisting of a few notes in a melody. The Lick, considered "The Most Famous Jazz Cliche Ever", has been used in various musical pieces, even outside of jazz. It has also commonly been used for comedic effect or as part of an inside joke among musicians.
See also: Rips featuring The LickThe Lick was first used in Awakening Wood - Pikmin 2. It has since continued to be used in new rips.