"Thumbs" is a song by American singer Sabrina Carpenter. It was released as a third and final promotional single from her second studio album, Evolution (2016), on October 7, 2016. The song was released as the second single from the album on January 3, 2017. It was written by Steve Mac and Priscilla Renea, with the production being handled by Mac. The song talks about embracing individuality and rising above mediocrity.

"Thumbs" is a electropop song with house and pop elements. It was released initially as a promotional single and later released as a single. The song was written by Steve Mac and Priscilla Renea and was the only song in the album without Carpenter's writing credit. The song was the last recorded for the album, Carpenter says. "We'd finish the album, I then heard "Thumbs" which gave me these vibes of fame and black and gold and just like some of my favorite soulful songs." The song talks about embracing individuality and escaping mediocrity. The lyric “They gonna keep on twiddling them thumbs” is a metaphor that means wasting your time doing pointless things and never making any real progress. She says that if people are falling into the same mistakes they are going to continue twiddling them thumbs, so they are going to live in the mediocrity. Carpenter describes the other songs in the album as "children" of "Thumbs."

The music video, which was directed by Hayley Young, was uploaded on her Vevo account on YouTube on February 10, 2017. The set of the music video is downstairs in a subway car and it was made in one take. The music video features Sabrina singing the song with several people inside the subway doing their daily tasks. When the idea of the video was being processed, Sabrina thought of a subway because it's where you find different people, the line "Somewhere in the world" represents that people.

Brittany Goldfield Rodrigues of ANDPOP said "the jazzy vibe of this song sold us, and the scatting just made us play it on repeat. With this tune Sabrina really makes us fall for her unique jazz vibes she sprinkles into her pop sound."

Carpenter first performed the song on the Honda Stage at the iHeartRadio Theater in Los Angeles on August 25, 2016, along with other new music before the release of Evolution. She performed the song on Today on November 22, 2016. On April 17, 2017, she made her late night talk show debut by performing the song on The Late Late Show with James Corden. On April 29, 2017, she performed the song at the 2017 Radio Disney Music Awards.

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