"Psilocybae (Millennial Love)", also known as "12.38", is a song by American rapper Donald Glover, performed under the stage name Childish Gambino, from his fourth studio album, 3.15.20 (2020). It was re-recorded and re-released on the album Atavista (2024), where it additionally received its full title. The song features guest vocals by rapper 21 Savage, American singer-songwriter Atia "Ink" Boggs, and American musician Kadhja Bonet. It was written by the artists and DJ Dahi who produced it with Gambino.
Glover sings about a psilocybin-induced trip with a girl who leaves hints about wanting to break up with him. Critics praised the song's comedic narrative and 21 Savage's guest appearance. Under the name "12.38", it peaked at number 22 on the NZ Hot Singles published by Recorded Music NZ. Under the title "Psilocybae (Millennial Love)", it peaked at number 20 on Billboard's Hot R&B Songs chart.