“[Three 6 Mafia’s] ‘Sippin’ on [Some] Sizzurp’ was actually the first song from a group that UGK and Three Six Mafia was doing together,” Bun tells hosts N.O.R.E. and DJ EFN. “We were going to be The Underground Mafia.”
Despite the record never landing on a joint album, the buzzing single found a home on Three 6 Mafia's 2000 effort When the Smoke Clears: Sixty 6, Sixty 1. Then, Bun goes on to explain how UGK's 2001 record "Like a Pimp," was the potential supergroup's second recording together.