Calum Hood of Australia's pop-rock band, 5 Seconds of Summer (5SOS), has hit the headlines for sending a snapchat video to a fan. It is just another 'Hello Fan' video. The bass player's video does not feature his face, but his penis. And, the smart fan made the video viral and Calum's penis famous. The fan filmed the clip and posted that video on Vine, sharing the clip with the world.

"CALUMS DICK I'M SCREAMING," the caption of the five-second Vine clip says. [Watch the VIDEO Here]

Calum, 18, took to Twitter to confirm that it is him in the video. He said, "Least ya know what it looks like now." He later posted that he is just a teenager who is learning from mistakes. His fans are not going to forget his mistake for years to come.

Earlier this month, when 5SOS climbed up the US Billboard charts and hit the number one spot, the band's twitter page posted a selfie of Calum, saying: "Hitting that number one spot is a pretty big deal!" [Check the Photo Here] He is topless in the photo. It was on July 31 that "Amnesia" music video was released. In addition to Calum, the Australian band consists of Luke Hemmings, 18 Michael Clifford, 18, and 20-year-old Ashton Irwin.

Recently at the MTV Video Music Awards (VMAs), 5SOS band members "got silly in their dressing room, singing Enrique Iglesias, tapping each other's privates and high-fiving more than once, according to MTV.

At the Awards, the band performed their song "Amnesia". Also, they won their first award for best lyrics video. After winning the award, Michael posted on his Twitter page: "Cannot believe we've just won a VMA... all of this is thanks to you guys. Best fans EVURRRRRRRR. I love you."

Meanwhile, the band's new track is called "Daylight," which is slated to release on Sept. 07.

Least ya know what it looks like now

— Calum Hood (@Calum5SOS) August 29, 2014

I'm still just a teenage kid learning from mistakes :)

— Calum Hood (@Calum5SOS) August 29, 2014