Your breasts grow very rapidly in your shirt, which is odd because you asked for nipples or tongue. You’re at least glad that you went sans bra as you go up to a eat and even C-cup, or there abouts, making your shirt tent a bit. But what gets you is the sensation on your nipples, which starts with a soft, ticklish sensation that’s followed by an almost unbearable, arousing burning for a few seconds. When the feeling ends, you look over to the mirror on the wall and something is… different. Your breasts are larger, yes, but their nipples also seem to have shifted and grown more horizontal than vertical, more pliant, and strangely… open? You swiftly pull up your shirt to reveal that in place of your nipples are two sets of plump, rounded lips, silently waiting. You tentatively touch one and find that sure enough, just behind them is a wet mouth, complete with teeth and a tongue. The sensation as you probe the opening is astounding, as if you’ve surrounded your finger with your nipple (which you suppose you have) as the lips close of their own accord and begin to suck on your finger vigorously. It feels so good that it takes you a minute to extricate them, huffing and panting the whole time. After you do, you feel another, new sensation - like the emptiness you’d feel in your stomach, except in your breasts. You consider for a moment that with nowhere else to go, every bit of mass you put in there would stay pretty permanently on your tits. Looks like you’re eating for three, now.