I know what you were thinking, heading into this article. "Just how dirty-minded is this writer? Will he make a sexual innuendo out of anything?" Well, yes, in this article, I'll try my best. But Steven Moffat himself confirmed that the title of 'The Big Bang' was a little joke he had with himself. You see, it was the episode that the Doctor rebooted the universe, but it was also the scene of Amy and Rory's wedding. And how does the episode end? With the pair of them on their wedding night, about to fly off into the TARDIS. When was River conceived? Oh come on, you don't need me to spell it out. So, the "life event" episodes of River Song contain 'The Big Bang'. And we now know what "the big bang" is. Thanks, Steven. I'll never look at episode titles in the same way again.