Jack is humongous. Although you love it, it wouldn't be so fun if he can't fuck you any longer. You try hard to think of a way to make him mobile again.
He seems to calm down. "Damn, I mean, shit, I'm too fat... I gotta lose some weight..." "I know Jack, but how?" "I think I can dump some fat." It's your turn to get confused. "Huh? What?" That's when you start smelling something sweet. Your stomach growls and you are becoming hungry.
You look around to find the source, and realize it's coming from Jack. Jack smirks at you and turns around showing his fat ass to you. His butt crack is filled and glistening with something, something syrupy. The sweet smell is definitely coming from the stuff. "What's that...?" You step forward without knowing and take some of it with your paw. It's very sticky, like honey, and clear, somewhat yellowish.
Your stomach growls again. You can't stand any longer. Knowing where it's coming from, you lick some of it. It's the sweetest you ever tasted! It slides down your throat slowly and the sensation is also beyond description. Your eyes open wide with surprise.
With your strong paws, you open Jack's fat and heavy butt cheeks wide and stick your muzzle into his butt crack, then start licking the stuff ravenously. Soon his butt crack is licked clean and you move your tongue to his butthole, where the stuff is coming from. "Ohhh..." Jack moans. As you lick his wide-open hole, more and more of syrup comes from it.
"Hey, stop!" Jack shouts between pants. You remove your head from his ass reluctantly. "Lie on your back!" Your head is spinning and can't think straight. "But I want more..." "Do it!" You roll on your back, trying to hold your hellish hunger. "Under my ass, dummy!" You finally understand what Jack is trying to do and move up a little, fixing your eyes to his massive butt that is starting leaking the syrup again.
Jack slowly sits down on your face. Your vision is blocked by his fat ass, getting bigger and bigger, and his ass fur finally touches your face. You adjust your position a little again and shout "I'm ready!" With a wet sound, he sits on your face. You quickly move your head so your muzzle is right under his wet hole.
As you lick his hole, more and more ass syrup flows into your waiting mouth. You stick your long tongue deeper into his hole and find his prostate. It's big and pulsating. "Fuck!" Jack shouts with joy and his ass starts producing a copious amount of ass syrup. You keep licking his prostate and gulp as much syrup as possible.
After a while, you begin feeling your furry belly is getting warm and... heavy? "What the hell?" You say under Jack's ass. You move your paws and touch your belly. It's getting bigger! Then the warmness in your belly quickly spreads out to your entire body and you feel your body is starting inflating. The syrup you are gulping from Jack's ass is making you fatter and fatter!
You scream and try to get out, but you are completely helpless under Jack's giant fat ass. "Oh yeah!" Jack's ass fat on your face shakes and his hole pulsates - Jack shot the load. You also feel he is getting lighter and lighter.
After a few minutes, Jack stands up and you can breathe cool air again. He turns around and stares at your inflating body. "Hey, look at me, I can move again." Jack says and grins. His belly is a few inches above the ground now. On the other hand, you are struggling with your increased weight. You're still far from immobile but you are not accustomed to the amount of fat. "Hehe, you got sexier, bud." Jack then licks your still inflating belly and your member. "Gahhhh!" Waves after waves of pleasure hit you and you almost instantly climax and cover your growing belly with your seed.
Your body is still glowing with the orgasm. Jack keeps watching you smirking, and moves to the 69 position slowly. You feel his massive furry gut weighs on yours and see he is moving backward. He is making an excessive amount of ass syrup and it's leaking from his butt, leaving a thick trail on your furry body. "N, no, stop it, Jack! I don't wanna get fat!" "Hey, I know you made me fat. It's your turn, dude. I'll forgive you when you become as fat as I am!" Jack then sit on your face again. "Nooooo....!" Your hopeless scream becomes a muffled sound under Jack's ass. He wiggles his ass and start dumping a huge amount of ass syrup into your mouth opened in horror, burning his fat.
You soon start growing larger and larger as Jack gets smaller and smaller. You are completely trapped under his heavy ass and your increasing weight.