Thick, Creamy, Delicious Pudding

Chapter 3: He's Getting Huge!

Milktank, seeing Sins compliance, turns the flow too the max, the vat rumbling as it rapidly empties its contents into the already swollen assistant. "Mm-*gulp gulp gulp*-mph~~!" Sin finally fell backwards onto his ass as his belly continued to fill out. He whimpered at the pain as he still tried to rub it to soothe the aching pain. "You can do it, your halfway, just a little more" Milktank encouraged Sin, hoping the other could hold on. Sin nodded quickly as he groaned just hoping he could get it over with. Soon they both heard a strain and a *POP* as his innie became an outie. Milktank helps Sin try to soothe his overstressed tum, the sudden pop making him very worried, seeing the other still had a quarter of the pudding to go. "I... *GULP GULP GULP GULP* got thish..." he spoke through loud chugs and gulps as his belly began to creak and strain. The hybrid looks from the tank too Sin, hoping it runs out of pudding before Sin runs out of room. The creaks and groans got louder and louder as Sin's belly started to turn red. This concerned the both of them as Sin was quickly running out of room. The vat finally runs dry, milktank silently thanking what ever force kept Sin from bursting like an overripe watermelon. Sin spat out the nozzle as he panted and groaned, choking on a small amount of pudding that came back up. "Oooh... so.... fucking.. full..." Milktank slowly strokes and rubs Sins belly "Its over now, jesus, I was pretty worried there. Well, now all thats left is wait for enough of that to digest so ypu can get up the elevator huh?"
"W-wait... Milktank..." He reached up weakly and tugged his labcoat. "Im not gonna leave ya down here Sin, even im not that cruel" Milktank rubs Sins belly, amazed at how much his skin stretched. "G-gimme more... I can take it... I'll take anything... anything at all.." Sin groaned as he looked up at him with a smile. "Sin you look like a balloon about to pop are you sure?" Milktank is honestly a bit concerned but also trying to ignore the tent in his pants. "Y-yes... I can take it MT... I got this! Besides.. I-I'm certain watching me bloat up has gotten you excited~" Sin pointed up at the erection in Milktank's labcoat. "F-fuck...fine" with more speed than anyone would expect from the hybrid he's pulled off Sins pants and his own lining up his erect cock with the others entrance pressing in slowly. "F-faster.. I wanna really push it~~" he said rubbing his belly furiously to help with the rising pain.