5 Seconds of Summer started a viral trend with their newest single "Teeth."

Fans around the world joined the musicians on twitter for what is known as the #TEETHChallenge.

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What is the #TEETHChallenge? Well, one films themselves singing the closing line of the chorus to "Teeth" with their best falsetto-sounding scream, just as the actual song plays out.

Even their producer got in on the fun as Ashton tweeted.

These videos launched an enormous amount of fan interaction with a few of our personal favorites seen below.

We wonder if anyone else famous is going to get involved. We sure hope so. What do you think about the #TEETHChallange? Let us know in the comments below.

More 5 Seconds of Summer "Teeth"

“Teeth” that will be featured on the next season of Netflix’s controversial series 13 Reasons Why. 

The track is featured as Zane Lowe’s World Record on Apple Music’s Beats 1, where the band opened up a bit on the track.

Facetiming with Lowe, the band opened up on the story behind their new track.

“I know what you’re thinking. It’s a funny name. And you’re like, ‘What’s Teeth even going to sound like?'” the band explains.

“We’re in the studio with Andrew Watt, Nellie, Tim Posey, who we did Young Blood and a couple other…and we were writing for like a month, or I mean a bit more than that, and just trying to search for something that was a step forward from Young Blood and all that stuff that we’re riding on the third album and Ryan Tedder was in this day and we’re kind of flipping through. I always wanted to write with him for years.

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“As a band, we look up to One Republic obviously, and him as like a pop songwriter so to write with him was already awesome. We’re kind of flipping through ideas and kind of writing a little bit and it didn’t really work and then at the end of the day this idea came about and yeah, it happened really quickly. A lot of times the best songs just kind of fall out quickly.

“I think for us we’ve kind of felt that ‘Teeth’ was always going to be the track that was kind of setting the like precedent for the rest of this record and I think ‘Easier’ for us has always felt like a bit of a setup. Kind of easing into the new different styles and genres and visuals and stuff like that, and I think ‘Teeth’ is where we’re going to come balls blazing.”

5 Seconds Of Summer are hitting the road with the Chainsmokers this fall. You can check out the full list of cities and dates below and grab tickets here.


09/25 — Cincinnati, OH @ U.S. Bank Arena
09/27 — Boston, MA @ TD Garden
09/28 — Uncasville, CT @ Mohegan Sun Arena
09/29 — University Park, PA @ Bryce Jordan Center

10/03 — Detroit, MI @ Little Caesars Arena
10/04 — Chicago, IL @ United Center
10/05 — St. Paul, MN @ Xcel Energy Center
10/08 — Toronto, ON @ Scotiabank Arena
10/09 — Montreal, QC @ Bell Centre
10/11 — Pittsburgh, PA @ PPG Paints Arena
10/12 — Buffalo, NY @ KeyBank Center
10/13 — Columbus, OH @ Schottenstein Center
10/15 — Washington, DC @ Capital One Arena
10/17 — Brooklyn, NY @ Barclays Center
10/20 — Nashville, TN @ Bridgestone Arena
10/22 — Atlanta, GA @ State Farm Arena
10/24 — Miami, FL @ AmericanAirlines Arena
10/25 — Tampa, FL @ Amalie Arena
10/26 — Orlando, FL @ Amway Center
10/29 — New Orleans, LA @ Smoothie King Center
10/31 — Dallas, TX @ American Airlines Center

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11/01 — Austin, TX @ Frank Erwin Center
11/02 — Houston, TX @ Toyota Center
11/06 — Louisville, KY @ KFC Yum! Center
11/07 — Indianapolis, IN @ Bankers Life Fieldhouse
11/08 — St. Louis, MO @ Enterprise Center
11/09 — Madison, WI @ Coliseum at Alliant Energy Center
11/12 — Milwaukee, WI @ Fiserv Forum
11/14 — Oklahoma City, OK @ Chesapeake Energy Arena
11/15 — Kansas City, MO @ Sprint Center
11/16 — Wichita, KS @ INTRUST Bank Arena
11/19 — Denver, CO @ Pepsi Center
11/21 — Salt Lake City, UT @ Vivint Smart Home Arena
11/23 — Phoenix, AZ @ Talking Stick Resort Arena
11/24 — San Diego, CA @ Viejas Arena
11/26 — Los Angeles, CA @ The Forum
11/29 — San Francisco, CA @ TBA
12/01 — Sacramento, CA @ Golden 1 Center
12/03 — Tacoma, WA @ Tacoma Dome
12/05 — Portland, OR @ Moda Center
12/06 — Vancouver, BC @ Pepsi Live at Rogers Arena

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