"Post to Be" is a song by American recording artists Omarion, Chris Brown, and Jhené Aiko from Omarion's fourth studio album, Sex Playlist (2014). The artists co-wrote the song alongside Ty Dolla Sign and DJ Mustard; the latter is also the producer. The track was released as the album's second single on November 11, 2014. Musically the song is a hip hop club track that is built over a clap-heavy West Coast production. The song contains a "bouncy" production and samples Chaka Demus & Pliers’ 1994 song "Murder She Wrote".

Commercially, the song peaked at number thirteen on the US Billboard Hot 100 and number five on the US Billboard Hot R&B/Hip-Hop Songs chart and in doing so passed "Ice Box" as his highest peaking single. The track also made appearances on charts in Canada, Belgium and the UK. The song was later certified platinum by the Recording Industry Association of America (RIAA).

An accompanying music video was filmed in Los Angeles and was co-directed by Omarion along with Jay Ahn and Taz. The video premiered on February 17, 2015 and depicts the three musicians dancing on an all white backdrop.

Omarion sent the song to Aiko asking if she would make an appearance on the track, Aiko agreed due to her friendship with Omarion, Aiko began "playing with the rhyme scheme" and states that the lyric "Post To Be" reminded her of rapper Kevin Gates Vines, in which he would talk about "booty". Following this Aiko began writing with longtime collaborator Micah Powell, during the writing Aiko states to Powell; 'Whatever we say, I really want to say something about eating the booty.' He keeps saying in the Vines—'You ’posed to eat the booty.'" Prior to the release of the song, Omarion released snippets, the song was later premiered on November 11, 2014 by the LA Leakers. The song was released as the album's second single on November 11, 2014, through Maybach Music Group and Atlantic.

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