"Toothbrush" is a song by American band DNCE. It impacted American contemporary hit radio as the second and final single from their debut EP Swaay (2015), on October 30, 2015. It was later added to their self-titled debut studio album. The song was written by DNCE lead singer Joe Jonas alongside Ilya Salmanzadeh, James Ghaleb, and Rickard Göransson and was produced by Ilya.