Admitting defeat Declan reluctantly opens his mouth and Santa slowly pushes the cookie into his mouth. Before he shoves the hole thing in Declan takes a chomp and starts chewing slowly, hoping for a chance to spit it out. But the way Santa is still smiling eyes beaded directly on him, he knew he'd have to swallow or possibly face worse consequences.
One gulp later Declan's body began swelling, he looked down at his fingers and they became thick as sausages, they reached up to touch his cheeks which had become noticably chubbier. His gut started to protrude and stretch out his pajamas and hang over his pants which were straining as his lower regions began to feel very tight and confined. The pajama shirt buttons popped out revealing a hefty gut.
All in all Declan estimated he'd grown to 280 lbs, probably the same as his pa.
"Ho ho ho" Guffawed Santa "You look jollier than old Kris Kringle himself! It's good to see you finally being filled with Christmas spirit Mr Hall"
Declan tried to stand up causing the seat of his pants to rip. As his new body struggled to push it self off the ground and back away from the fat man. Declan hoped it was over, but Santa had other ideas. His black gloved hand made a downward swing through the air and Declan immediately felt himself shoved back to the floor by an unseen excessive force of gravity. Santa once again waved the cookie in front of the naughty boy's mouth.
"Now now Mr Hall, it's not nice to waste food" Santa chortled "Why don't you be a good boy and finish your cookie"
Declan did not want to balloon up another 100 pounds let alone 200.