"Oh? Cumming so quickly?" "Well, not exactly cumming. You can feel it, can't you? The block?" "That's right.. it was part of those delicious injections, making you swell up so much." "Mmhmm... you won't be able to cum, unless we let you, because you can only cum if someone's milking those delicious tits of yours." "And, of course, we're not going to, until you do everything we want, isn't that right?" "That's right. And right now, the lady of the house wants you to suffer. Oh, say, an hour or so of this, and then we let you earn your right to cum. How does that sound, you naughty little elf?"