"Busy Child" is a breakbeat single by The Crystal Method from the album Vegas. It is one of the group's most recognizable works, reaching #17 on Hot Dance Club Play charts, and remaining on even ten years later.
The "I guess I didn't know..." vocal in "Busy Child" is sampled from the song "Know the Ledge" by Eric B. & Rakim. The song also features a vocal sample from the DJ Pierre-produced house track, "Summertime (Is Get Busy Time)". The sample was made to sound like "Get busy child!", in which the song's title is based on.