"Drop joint" is a slang term commonly used in music and dance, particularly in the hip-hop genre. It refers to a particular dance move or a moment in a song where the beat or rhythm changes suddenly, leading to a drop in energy. Some common synonyms for "drop joint" include "drop beat," "beat switch," "switch up," "shift," and "change-up." Each of these terms implies a sudden or unexpected shift in tempo, rhythm, or energy that can add excitement and variation to a performance. Other related terms might include "breakdown," "breakbeat," and "BTS" (which stands for "behind the scenes").