"I can only think of one more thing. You got lucky; this could have ended out worse."
The woman then picks up another syringe, this one with a pink liquid. She inserts it into your chest, along with the Gene-fusion serum. Your chest immediately starts feeling funny, but nothing happens at first.
"I think you're gonna like the one," she says in a mischeivious manner.
The changes happen swiftly. First, your chest slowly begins gaining mass, forming two lumps under your nipples. The change picks up speed, sending your chest barrelling outwars. Once it stops, you are left with a nice set of double D breasts.
However, it's not over. A second pair of nipples forms beneath your new breasts, and they start gaining mass. Just like the pair before it, these two gain mass until reaching DD size. All four breasts begin filling with milk, though very slowly. The woman forces you to stand. Your horse cock hangs down between your legs, your udder sags slightly while it fills slowly with milk, your lower breast also sag, to the point where they touch your udder. Your upper breasts are practically defying gravity, sagging only slightly.
"You're a freak! It's great! Now, can you talk?"
You manage to get out a few words, proving you can still speak. You said,"What... have you done... to me?"
"Unless I think of more, this is it. I am done messing with you and you should soon be ready to go back into the normal world." she says.