As they reached the bathroom, Sally glanced around blankly, unsure why they had come back down the hall. Colin walked in and picked up a shopping bag from the floor, placing it in his lap as he sat on the closed toilet. He rummaged around inside the crinkly plastic for a moment before pulling out a small tag and holding it out towards his girlfriend.
"There's really not that many details on it, Sally, see?" he pulled it back, reading "'The Perfect Costume Compliment to help get you in the MOOD! Accessories made to match, guaranteed to adapt and work with all Cattle Costumes!' ... I mean, I don't know. I think that means they'll work just like any other magical costume parts you're already wearing, right? I think they'll come off tomorrow, just like the udder!"
Sally was chewing thoughtfully, her jaw moving in an odd, circular motion as she struggled to focus on what Colin was saying. "What are you talking about, Col? What's going to come 'off'? You can empty my udders, as we both know," At this, a wistful look entered her eyes and she shifted on her hooves, her mammaries jiggling beneath her, having begun to feel full once again. "but you can't take them OFF! They're a part of my body!"
She had sidled closer to her boyfriend as she talked and Colin found himself frozen as she braced her front hooves on his thighs and stretched her neck over his shoulder, rubbing her huge, altered breasts against his chest. "Mmm Colin. They're soo heavy! Please, can youu milk me again? Please?" she moaned, unable to think of anything other than the sweet release she craved.
Not all of Colin was frozen in shock, evidenced by the growing bulge in his pants. Apparently when Colin had chosen the cow costume idea for Sally, it wasn't just because he thought it would be funny. He gently pushed her back to the floor before coaxing her to put her front hooves into the tub, walking around to stand behind his newly quadrupedal girlfriend. Sally moaned again as his hands slid down over her hips, caressing her lower udder before sliding forward to grip each of her enlarged, four-teated nipples that drooped into the bathtub. He gave them a simultaneous tug, eliciting a third moan from Sally that stretched out into a long lowing "mooooooooOO!" of pleasure as her milk hit the porcelain.
So lost in the new feelings of release each tug caused to course through her body, Sally didn't hear the *zip* of Colin lowering his pants, but she perked up as she felt him prodding at her entrance. She pushed back as he pushed forward, taking him inside easily in her new position, unaware that her body was rapidly changing with every squirt of her now "naturally" produced milk. Her tail was now over two feet long, pulled to one side as Colin thrust into her reoriented opening. As she lowed with pleasure, eyes closed and head throw back, she couldn't see that her nose had broadened and pushed outward, her teeth thickening and flattening as her mouth reshaped around her moans.
Colin continued to tug on her teats but his motions soon sped up, becoming slightly frantic as he gave a few final rapid thrusts into his bovine girlfriend. He came with a shout, shooting his cum deep into Sally's enlarged vagina before slumping over her bony hips and spine. He rubbed his face against her back, loving the fuzzy feeling against his cheek as he gathered himself.