The kid drags Jeff and Mark with him and hops in the crib with another boy.
They open the diaper and the first boy pushes up against Jeff and starts to push his way in. As this happens, the other boy punches a hole in the diaper around his face and pushes his way in there too.
They both start to push Jeff back and forward and begin to fill his holes, the poop being pushed into his mouth makes him hard too..
The boy inside his back begins pounding harder until he shoots the biggest load yet, and not long after the other boy thrusts Jeff's head against him until he shoots his load too, causing Jeff to cough it up over his face but tries to swallow as much as he can. The thrusting and the cum filling his mouth caused Jeff to respond in turn and shoots his own load into the front of the diaper.
The boys have remained in Jeff, and as they soften they proceed to pee simultaneous into both of Jeffs holes.
He is then immediately laid on his belly and the first boy sits above him to drop a poop onto his cum filled butt, before taping him in.
The second boy pushes his butt up against the front of the diaper, and an appendage starts forming on thr front of the diaper for Mark. The boy pushes into his back while the other bounces them into him. Finally Mark gets his release, with some come oozing out the soft front padding into the boys butt as well as into the inside of the diaper.
They finally pull open the front and he drops his cum coated load onto Jeff's crotch.
The diaper around Jeff's head is temporarily removed so he can lick them up before it being quickly placed back on.
Jeff is shunk back down, and the diaper around his head as well as Mark are rolled into a long log with openings on the top and bottom.
The boys drink their bottles and take the diaper log and sheath it over both their penises before falling asleep.
About half an hour in, one of the boys begins to flood the log causing it to get warm and swell. Jeff tries to move away and runs into the other boys penis which starts to get hard as the padding encloses around it. Jeff is pushed up against it and the struggling causes it to get excited with the sleeping boy starting to gyrate, rubbing Jeff up and down. He quickly shoots out a load filling the centre of the diaper with sticky mess and pushing Jeff down to the other end where the scenario begins to repeat.
Jeff tries to move away back to the centre, but as the first boy begins the familiar gyrating, the second releases a torrent of pee pushing him right against the tip as he blows. Jeff gets a face full of the boys cum with a huge amount shot down Jeff's throat.
Eventually they wake up to the now much thicker and stickier diaper sausage. Proud of their work they start squishing it up and down each other and quickly become hard again.
They decided to grow Jeff a bit making him fill the centre of the diaper and push against the log. The expansion pushes him onto boy and filling his rear while the others is pushed into his mouth. They continue to squish him up and down until they both simultaneously release filling both sides.
They then undo the diaper log and sit back to back about to drop another poop into Mark and onto Jeff.
Finally he is grown to the size of wearing the diaper again and made to clean them up.
They exit the crib and bring them over to the pail and drop them in. The kids lift up the pail and give it a shake as they shrink and find themselves in the mountain of diapers again.
The fun they had caused a couple of the newly spawned diapers to just be filled with sticky cum, while the other 11 are the usual messy diapers.
Jeff just rests for a bit before embarking on the journey again.
As he got to one of the cummy diapers and climbs through he gets turned on and decides to give Mark some attention.
He takes the diaper off and pushes the inside against the pools of cum, filling up as much as he can. It swells to accommodate. He then pushes more into the holes on the front and back before taping it down over a ridge and humping it. He shoots his own seed into Mark before licking up some of the cum he is surrounded by.
He rests for another 5 minutes but then goes for round two and proceeds to pound the front hole too, filling Mark more.
The diaper bump of Mark grows as he gets filled, and Jeff then moves to suck the front of the diaper where the bump grew until it starts leaking out cum into his mouth.
Jeff finally puts the diaper back on and it slowly cleans dropping another couple cummy diapers into the pail.
They climb to the top where another kid grabs them out along with one of the cummy diapers and drops them on the ground.