"Favorite Song" is a song by American rapper and singer Toosii, released on February 17, 2023, serving as the lead single from his debut studio album, Naujour. It was produced by ADELSO and Tatiana Manaois (who also provides background vocals on the song). The slow R&B beat with a slowed sample sees Toosii sing about him being the perfect valentine for his partner. A remix with fellow American singer Khalid, along with a "Toxic Version" of the song with fellow American rapper Future, were respectively released on May 5 and May 19, which has seen an increase in interest around the track.