[3] "Bbibbi" is a laid-back alt-R&B track with confrontational and introspective lyrics that addresses IU's critics, with her turning around commentary on her image.

[5][4] "Bbibbi" refers to a pager in Korean, in particular the noise the device makes before people leave a message.

[5] "Bbibbi" debuted atop the Gaon Digital Chart on the week ending October 13, making it her twentieth number one song in South Korea–the most for any artist.

[6] The music video, directed by VM Project, was released along with the song and makes prominent use of monochromatic colour schemes.

IU performs a choreographed hip hop dance routine with a blank expression on her face, which was called "more cute than menacing" by Caitlin Kelley of Forbes.