Ummm...If CNN had one person with one inquisitive bone in his/her body....couldn’t they re-enact it?
Ask the sex chatter where he lives, fire off some rounds at the Brown Memorial pavement stain, and see if his computer microphone picks it up in the same manner.
At least they will have a notion of plausibility...still wouldn’t be proof, but it at least is some vetting.
Or screw it, put it on the air without knowing jack about its authenticity.