"Dumb Dumb" is a song by South Korean girl group Red Velvet for their first studio album The Red (2015). It was written by Seo Ji-eum of Jam Factory and Kim Dong-hyun, while production and arrangement was handled by LDN Noise, Deanna Dellacioppa, Tayla Parx, and Ryan S. Jhun.[1] An uptempo dance-pop track, its lyrics conveys a girl expressing her awkwardness regarding her feelings towards the object of her affections. It was released as the lead single of The Red on September 8, 2015[2] by SM Entertainment,[1] along with an accompanying music video.[3] "Dumb Dumb" received positive reviews from critics, who praised its production and the group's vocal delivery—regarding it as one of the group's signature "red" concept songs. It attained commercial success, peaking at number two on Gaon Digital Chart and number three on Billboard's World Digital Songs chart. The song has since been named by Dazed Digital as their top K-pop track of 2015[4] and was ranked at #70 on Billboard's 100 Greatest Girl Group Songs of All Time.[5] Its music video was also included in Rolling Stone's 10 Best Music Videos of 2015.[6]