“The Carpal Tunnel of Love” originated as a promotional single for the album. It’s a blend of the phrases “Carpal Tunnel Syndrome” (a condition caused by perpetual pressure on the wrist) and “Tunnel of Love” (a nickname for the “Old Mill” amusement rides in which people would ride a boat through dark tunnels).

It is the only song on the album to feature Pete Wentz’s screaming, a quality that was more prominent on their earlier albums. Wentz uses his screaming for the bridge, which eventually overlaps with Stump’s partially falsetto vocals for the reprisal of the chorus.

The music video features characters from the online webseries “Happy Tree Friends” and also features the band members drawn in the style.