I've seen this construction quite a bit, although only in the last five years or so. It's a transcription of a way of speaking, where the speaker is emphasizing something by using a verbal full stop after several words in a row, no matter where it is in the sentence. To wit:
- Please don't use the "Prologue, then flashback" technique because it has been done. to. death. lately and I am sick of it.
- "We are going to do this because we were hired to do it, and then we. Are. Finished. Forever. I don't ever want to speak to you again."
- That episode of The Simpsons? Best. Episode. Ever.
Does this structure have a name? And while we're at it, is there any convention to how the words are capitalized? I used all three ways I've seen it (no caps because it's in the middle of a sentence, caps after every period, three "single-word sentences") in the examples above.
(My guess is that it originated from Comic Book Guy's catchphrase, but that's neither here nor there.)