DO NOT Photoshop Megan Fox's naked face on another chick's naked body ... and then publish it online ... because she will sue the crap out of you -- at least that's the threat she sent to one website this week.
Megan's legal team fired off the cease and desist letter to a parody website called Celebrity Jihad -- after the site published a shockingly good Photoshopped pic last week, depicting Megan's face on a naked chick's body.
But Megan's lawyers aren't impressed with the image-doctoring skills -- claiming the photo is 100% fake (no duh) and must be taken down ASAP ... or they'll sue.
A rep for Celebrity Jihad tells TMZ ... "While we appreciate Megan Fox's concern for her image, we find it hard to believe that a woman who spent two Transformers movies bent over with her breasts pressed together could have her reputation damaged by a blatantly satirical website."
See also
TMZ Live: Prince Harry -- Royal Threats After Naked Photos
Carly Rae Jepsen -- REAL Nude Photos Exist ... Cops Investigating
Travis Barker Nude Photo -- Stop Showing My Penis ... Or Else!
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