JYJ's Jaejoong couldn't stand a particular poser who is claiming his identity on Facebook and decided to leave a warning message on his twitter account on January 17.

He wrote, "I don't use Facebook so the poser who's claiming to be me and pranks other artists... should stop now..^^ There's going to be a problem if you don't delete it right away^^.

A simple warning along with a fierce selca of him expressing his emotion while writing the message. Hopefully, the person already deleted the account at this moment.