Lil Pump‘s references to Asian culture in his upcoming track have struck many fans as racist.

The 18-year-old rapper, whose real name is Gazzy Garcia, posted a preview of his new song, “Butterfly Doors,” on Instagram on Monday, and many of his followers were immediately outraged by the lyrics and one particular gesture he made during the clip.

While reciting the line, “They call me Yao Ming ’cause my eyes real low,” Lil Pump stretched his eyes with his two pointer fingers. After he did it twice, he also rapped, “Ching chong.”

The Miami native captioned the video, which he also posted to Twitter, “BUTTERFLY DOORS COMMENT IF I SHOULD DIS.”

On Twitter, followers immediately decried the material as racist.

“I was giving this a chance until I heard the ching chong ad lib,” commented one user.

“Not cool,” simply wrote another.

“Ching chong excuse me what,” wrote a third with a screenshot of the Colombian-American making the problematic face.

Comedian and Crazy Rich Asians star Awkwafina also called out the rapper in a since-deleted tweet. According to multiple outlets, she wrote: “Always nice to hear a new song with a Ching Chong adlib. Guess it’s better than ‘eyes chink’ like some other verses I’ve heard. But can we at least think of some more creative racist epithets? @lilpump.”

Lil Pump has yet to acknowledge the backlash to the song. His reps did not immediately respond to PEOPLE’s request for comment.