Ok, from what I've noticed working around with my own dialogue, you got a few things wrong, here.
Stuff in **'s only appears when the blank name space is filled with, say, "Todd", or you know, "Lord Voldemort", whatever. You've just arranged it slightly wrong:
first_throat:"* YOU*,Don't stop! Fuck my mouth!"
In this line, the arrangement creates a space before the name, and leaves the comma and capital letter 'D' misplaced. Mostly, only a few others are spaced oddly, but it does ruin the grammatical progression from time to time.
You need to seperate it it with a comma, or space it correctly, and try not to put the *YOU* and such at the beginning of sentences.
And later on:
restart:"Just *FINISHES* times master? surely you can give me more milk!"
Again, no big deal, but in-game, the *FINISHES* tag automatically adds' times' in there. So, in game, your abiove sentence spits out:
"Just seven times times master?" Etcetera. Nothing major, just thought these tips might help. I am a Grammar Nazi, so it might as well help the community, asides from being insufferable.