Atlantan rapper Young Nudy and his cousin 21 Savage have dropped a track together, called "Mister."

"Mister" is from Young Nudy's upcoming mixtape Sli'merre, in collaboration with producer Pi'erre Bourne. The song features Nudy rapping lines such as "Mister traphouse, mister dopeboy, mister slimeball, mister get my pack back" over a catchy Pi'erre-produced beat, with one verse from 21 Savage. Listen to the song below.

It's not the first time the cousins have collaborated. Last year they dropped "Since When."

21 Savage's infamous ICE detainment in February occurred at the same time as Young Nudy's arrest for aggravated assault and participation in criminal gang activity. The two were in a vehicle together when they were pulled over in an operation targeted at Nudy, and Savage was subsequently arrested as well. Both rappers have obviously since been released.

Sli'merre is out May 8 on Young Nudy's own record label, Paradise East Records.