Same Tests, Different Scientist

Chapter 2: Well... He's Pretty Good

"One down, plenty more in store."
He picked up the next one, already opened. The flow of batter continued, sweet and filling. Sin soon felt his lower midsection feel awfully tight. He clutched his gut and felt it grow in his hands!
"M-*gulp*-mph~...." he whined a bit as he had no choice but to continue chugging it down. "Yes... Now you're turning into a fine cow."
He used his free hand to tease sin, rubbing it against his stomach. Sin felt a tingly pleasure rise up inside him. He's never really been called a cow before but he obviously loved it due to the fact that he was blushing a bright red at this point. Still, he kept on chugging all of the fattening batter like an obedient cow. The lab worker took note of his pleasure.
"Yeah i knew you'd be into this, you fatass."
He jokingly poked at sin's distended belly.
"M-mph....~~"
Sin has never had this kind of verbal approach used on him before but he was still loving it, as he was simply squirming with pleasure at this point. Sin's belly jiggled as it continued to fill, showing no signs of stress or popping. "See? I knew a gluttonous pig like yourself would be able to handle all this."
He said, dumping the 5th gallon of cake batter into the funnel. Sin felt the pleasure building up, in more ways than one. Mostly... in his pants. But he was too distracted by the fact that his round gut was touching the ground to realize that even Toffee could notice what was going on down under. A sleek grin snuck it's way across Toffee's face
"Hmmm, maybe you're enjoying yourself a little too much."
He forcefully grabbed a hold of the bulge in Sin's pants, fondling it.
"I can't allow my little cow here to get distracted now."
Sin jolted up with a shiver feeling Toffee's touch on his bulge.
"Mm-mph....?~~"
He whined a bit looking up at the scientist with a facial expression of near complete submission. All of this batter and dirty talk was eating away at him slowly. "Hmmm, it seems my attention is needed elsewhere, I need to free my hands."
He set down the 8th empty jugg, and walked across the room. The was a large container there, previously in Sin's blind spot. He detached a hose, bringing it back and popping it into his mouth. sin was once again met with the rush of cake batter. "Mmmph!!!~~"
He groaned feeling the quick rush of cake batter enter his eager mouth again. He started to moan at the feeling of his gut grow so rapidly. It made his cock pulse inside his pants an insane amount as it leaked tons of precum. "Now, let's take care of this emotional distraction."
Toffee bent down, nestling himself between Sin's belly and legs. He pulled Sin's pants down around his ankles, exposing his erection. Toffee wasted no more time, and quickly wrapped his mouth around Sin's cock.