She could feel the spongy tongue against her sex and the bumpy ridges of the top of the mouth against her ass. Gina stayed perfectly still not wanting her crotch to mash against the oral cavity and arousal her, but even if she had stayed still it wouldn’t have helped because Britanny’s tongue went to work.

“Jinkies,” Gina moaned out on instinct as she felt Britanny’s tongue slip over her sex. Stars filled Gina’s sight as the folds of her sex were parted by Britanny’s talented tongue. Back and forth the tongue went soaking her already enflamed vulva as it hit every nock and cranny of the sex as if it were searching for something. Then it found it, with a flick of her tongue Britanny gave Gina’s clit a brief nudge with its soggy tip. Gina groaned between clenched teeth, she needed to get her crotch out of Britanny’s mouth and down her throat. She grabbed onto Britanny’s wrists try to make her let go so she could escape the capable tongue, but Gina lacked the strength and leverage to do this.

“Please don’t,” she gushed quietly, she could feel it boiling in her loins and it was coming hard. Nearly panting like a dog Gina tried again to plead with Britanny but when Gina looked into the bright green eyes of her devourer she knew that it was hopeless. Tears of joy were gushing from Britanny’s eyes as she was taking in this new flavour of her sister. Saliva was running down her chin as her mouth overflowed. Britanny had discovered a new taste that her favourite meal had to offer and she loved it.

“”Saaa gaaad,” Britanny said with her mouth filled with Gina’s sex. Her tongue flapped against Gina’s sex as she talked enticing another moan from the unwilling party. Gina became slightly unstable when Britanny’s left hand left her side and reached down into her own pants. Gina was shocked when she saw her sister touching herself in the middle of eating her.

“I guess eating me is exciting for her too,” Gina said to herself. With out Britanny’s left hand no longer holding her up Gina wobbled around inside Britanny’s mouth. Gina had to be careful of the were-cheetahs pointed canine teeth that poked her as she rocked back and forth. With Britanny’s tongue going to work on her twat, Gina knew that she needed to get down her throat before it was to late. Waiting for the right second Gina striked when Britanny moaned around her. While her throat was open Gina thrusted her body to the left and out of the one hand that was holding her up, Britanny’s cheek slightly inflated as Gina’s body pushed leftwards in her mouth.

“Yes!” Gina exclaimed as her sex escaped the mouth and dropped into the throat. She had fallen to her belly button before Britanny caught her by the armpits. Red in the face and panting Gina looked at her sister in triumph, with out her sex being lapped at she could resist the urge to climax and never again be randomly snacked on.

“I’ve won,” Gina says simply. As Gina looked into Britanny’s eyes she became worried, instead of uncertainty or defeat Gina saw mirth in those big green orbs. Before Gina could ponder much on what her sister was thinking, Britanny took a big swallow and instead of a drop Gina stayed still, that was when it hit Gina the throat muscles contracted to embrace her body hard stretching before recapturing her midsection. The sudden pressure and release of her sex was exhilarating, as her sex was pressed down from all angles then released. Britanny took another gulp but kept her grip tight on Gina so she didn’t go down and again that sensual pressure then release followed. With growing dread Gina realized what was going on. Britanny was swallowing her but was holding her up so her throat wouldn’t suck Gina down, this cased ripples to push on Gina like a compressor to stimulate her to orgasm. It was clever, smart and well contemplated something that Gina didn’t believe were Britanny’s strong points.

Gina looked past Britanny’s head and looked at her exposed throat to gaze at a vague outline of her figure could be seen bulging out her once slender esophagus. She watched as Britanny took another swallow and her throat closed in around her, the throat became like another skin for Gina and she could see details that she couldn’t before, like her own enflamed mounds and even the full shape of her meaty behind. Gina tilted her head back and made a gurgling sound in the back of her throat as another waves of euphoria washed over her. It was at this time that something broke maybe it was Gina’s will or her body just gave out on her? But the result would be the same with ether reasons.

“Aaaaaawwwww!” Gina screamed as she reached the biggest orgasm of her life. Her body shook like a fish as her scream of pleasure echoed around the empty lab. Her hands clenched and unclenched with her deep breathe. A spray of her juices ran down the throat and dripped into the stomach where she was going. Her eyes dilated as her vision swarmed with stars and her mouth stayed open in a silent scream. Then she went limp. As though someone had cut the busty blond scientist’s strings, Gina became a limp doll in her sister’s mouth.

Seeing that her sister was no longer in the land of the conscious, Britanny began to take her the rest of the way down. Britanny releases her hold on Gina and she quickly starts to slip down the throat. Gina comes to a stop when her large breasts bounce into Britanny’s bottom lip. Grabbing the large jugs in each hand, Britanny crams them into her slobbering mouth forcefully. A semi conscious Gina babbles out something that might be a moan. Britanny lets the sweet meaty flavor of the two mammarys roll around in her mouth, they jiggled and bounced as her tongue probed and prodded them for more flavor. Then once her tongue had absorbed most of the taste, Britanny swallowed them down and Gina’s outstretched arms and head were all that remained outside of the were-cheetah. Without even having to swallow Britanny loosened her throat and tilted her head back a few more inches and the rest of Gina slide down easily.

Distantly Gina watched as her vision of her lab disappeared and was replaced by the pink ridges of Brittany’s mouth. She felt her chin hit the opening to the valve at the top of the throat before it relaxed and her head slipped into the confined esophagus. Her arms came last and as they slipped into the throat with her the mouth returned to its normal shape and the throat closed up, trapping Gina in the dark steamy throat. Then she felt a slight drop and landed with a wet thud in the stomach. Already she could feel exhaustion setting in and quickly she returned to sleep land. The last thing on her mind was the repercussions of her bet now that she would have to be Britanny’s slave.

Standing in the middle of Gina’s lab with her tank top pushed up by her human sized belly Britanny licked her lips and wiped off any excess drool. Without being hindered by the extra weight, Britanny walked out of Gina’s lab and shut off the lights. The things she had planned for Gina would leave no time for her work.