Calum Hood of 5 Seconds of Summer, 2014.

Calum Hood of 5 Seconds of Summer at HMV Oxford Street in London on July 1, 2014.

REX USA/James McCauley/Rex

Attention all teens: If you send out naked pictures and you're famous, they will definitely wind up all over the Internet. 

That's the lesson 5 Seconds of Summer's Calum Hood is learning today, after sending out some (faceless) nude photos on Snapchat earlier this week. Whomever he sent them to posted them all over the Internet, per TMZ

Hood basically admitted the revealing pictures were of him on Twitter, writing, "Least ya know what it looks like now," and "I'm still just a teenage kid learning from mistakes :)"

Ultimately, it's great to see his... sense of humor.