The phrase comes from the Cha Cha Slide, the line dance song by Chicago DJ Casper that became a party staple in the early 2000s. The track guides dancers step by step, calling out slides, stomps, hops and turns over a steady beat, which made it easy for large groups to join in without rehearsal. It spread through weddings, school dances, fitness classes and social videos, where short instruction clips are now reused on their own. The two hops line endures because it is instantly recognisable, simple to follow and easy to drop into a dance moment.