Kodak Black went wild in a freestyle from behind bars, threatening to punch Yung Miami -- who's pregnant with 808's Mafia's Southside's daughter -- in the belly.

"I bought Yung Miami a ring, she wanted 808 baby," he raps, "When I see her I'ma hit that b*tch in her stomach/The way I keep my sh*t too real, they say I'm f*cking up my money."

Southside was understandably pissed at Kodak's lyrical attack.

View this post on Instagram

#808mafiaboss got some words for #kodakblack after he mentioned home and #youngmiami in jail freestyle over phone 👀🙄 Thoughts⁉️🤔 #Southside #snipergang #killbill #TCBvision

A post shared by THE 🆒EST 🅱️ULLY 👁 (@tcbvision_) on Jul 28, 2019 at 2:32pm PDT

"Hey, somebody tell Kodak suck a d*ck. How 'bout that? Get out of jail first, p*ssy," he said.

Kodak must have the Internet in his Federal pen because he saw Southside's response and quickly clapped back on IG Live.

"I Ripped Dat Bih Ainna," typed Kodak. "@808mafiaboss Put A Beat To It."

Why's Kodak trolling harder than ever from the Fed while 6ix9ine is silent?