Bow Wow and Erica Mena are definitely not friendly exes. During a New Year's Eve party in Los Angeles Thursday, Bow Wow slammed his ex-fiancée in a lengthy expletive-filled rant.

In a video posted by The Shade Room, the "CSI: Cyber" star kicked off his speech by thanking his fans. He then started to bash the former "Love & Hip Hop: New York" star.

"I don't care about no b--- from 2015. Don't ask me about that crazy b----," he said. "F--- y'all reality shows n---. We done with these rowdy b----, we done with that s---. We're my day-one n--- at, that graduated college; that take care of they motherf--- kid. You bum a-- b---. F---- you b---."

Mena hasn’t responded to Bow Wow’s diss, but it appears the rapper-turned-actor wasn't the only person throwing a little shade on New Year's Eve. According to Design & Trend, Mena also slammed Bow Wow in a series of tweets earlier Thursday.

“I want to thank God for all the things that didn’t happen. Thank him for all the things that he stopped since I didn’t know any better," she wrote in since-deleted tweets. "I made some stupid decisions this year, man. But seriously, one decision I did make instantly elevated me and my life, so please trust your gut.”

As previously reported, Bow Wow and Mena have been bashing each other on social media for the past few months after news broke that they had called off their engagement.

In December, the former VH1 star alluded on Instagram that Bow Wow was beating his baby mama Joie Chavis.

Chavis, who shares a 4-year-old daughter named Shai with Bow Wow, reached out to The Shade Room to deny Mena's claims.