TMZ turns around and sues source after case against Jared Leto goes south.

Put your money where your mouth is!
For those who are always in a hurry to sell TMZ videos and pictures,  I think you need to start thinking twice.

On Friday, TMZ and its corporate parent Warner Bros. filed a complaint in California federal court against Jacob Miller, said to be the one who provided the site with video showing Jared Leto critiquing Taylor Swift's work admiringly before exclaiming, "I mean, f— her. I don't give a f— about her."

Leto apologized and then sued TMZ for copyright infringement, blasting the news website for invading his privacy by publishing a "stolen" video. Leto's lawsuit also put him in court against Warner Bros., which is distributing Suicide Squad, starring Leto as the Joker.

TMZ and Warners have now tapped Kelly Klaus — the same attorney who represented Warner/Chappell in the battle over whether "Happy Birthday" was in the public domain — to defend the legal action over the Leto footage. Their initial move is an attempt to pin responsibility on Miller.

"A the heart of this lawsuit is a straightforward question," opens a complaint by TMZ and Warner Bros. "Who owned the copyright in the allegedly infringed video on December 4, 2015? On that date, Third-Party Defendant Jacob Guy Miller represented to (TMZ affiliate) EHM that he created the video, that he had the right to and would sell it to EHM, and that he was free to do so 'without any obligations to any third party.'"