About 45 mins and 45 seconds into the last hour of Wolf Blitzer’s The Situation Room (about 6:45 p.m. ET Wednesday June 4th), Jeffrey Toobin, Jack Cafferty, Gloria Borger and Wolf are discussing when Hillary Clinton will drop out. At one point Ms. Borger says, “Don’t worry you’ll get the money shot of the two of them together holding their raised hands in the air”
Jack at first has a small reaction then turns to Jeffrey Toobin to his right (which happens to be almost directly into the camera); Toobin smiles almost imperceptibly and while Ms. Borger is coming to a conclusion in her remarks, Jack says, “Did, uh, you say, ‘Money Shot?’” To which she replies, yeah, you know and pumps her right hand in the air pantomiming the two candidates holding hands. Jack turns to Toobin and Toobin is now smiling broadly and finally says, “it’s, it’s...Jack and I’ll just keep that to ourselves.” Blitzer meanwhile plows professionally forward.
Wiki suggests that the phrase is originally from the general movie industry
slang for the image that costs the most money to produce. For example, in an action thriller, an expensive special effects sequence of a dam bursting might be called the “money shot” of the film.
The third meaning seems to be what Cafferty and Toobin were, uh smiling, about. I would have thought that the origin of the phrase might have been in the porn industry and moved to the general movie making world. But I have no way of checking that out. Wiki suggests that it is the reverse siding, it seems with the OED.
Sounds like Toobin, Cafferty and I (and at least this one blog) are stuck in that third generation of metaphor. And thus in the gutter.