The family's red Mustang pulls into the Mall parking lot, as So's mother opens the door and steps out, the smell of baby mess vents, causing a nearby man to gag and his Son to giggle.

"Oh boy" Mom says, as she unbuckles Sox and lifts him, his diaper sagging and his onesie buttons ready to pop "What did I feed you?" She whispers to herself, putting her hand under his butt as his liquid mess squelches, she sets Sox down on the ground, holding his hand as they walk towards the Mall, Sox's diaper squishing with every waddle.
They enter the mall, people walk by, many looking revolted at the new filthy smell tainting the air, Mom looks at Dad "Gruff, you need to change him, there's a station in the bathroom" he looks at her, then down at Sox "Got it!" as he takes Sox's hand and leads him to the bathroom.
The boys walk into the cold room, the baby changing station just out in the open, not in a stall or anything; Gruff opens the changing bed and lays down a paper towel, lifting up Tyke Sox and setting him on the table, Sox automatically lays down since he's done this so many times.
Gruff untapes Sox's diaper and pulls it down, revealing a massive softball-sized cake of shit, soaked in piss, every corner of the diaper covored in hot diarrhea, and all of Sox's pelvis completely stained brown "Shit, I don't think I can clean all this..." Gruff murmers, jsut as another man, a horse, setps into the room, staring directly at Sox's filthy cock 

"Peeyew! Your boy there made quite the mess"

Gruff and the man both share a laugh "That's what my wife's cooking does!"
"I getcha" The horse says "My Son had massive apples, they would even rip his Diapers!"
"Well, Sox has been damn near close to that before!"

The two men laugh again "Well, good luck" says the man, as he saunters off to one of the Urinals and drops trow, the sound of pissing soon resonating throughout the now-nolonger-empty room.

Gruff removes Sox's diaper and folds it, setting it aside, grabbing nearby wet-wipes and taking one out, rubbing it hard against Sox's butthole, the wipe instantly staining a deep brown, then grabbing a second to clean off the boy's cock and balls, Sox giggling as he does so.

"That tickles, daddy!"
"I know that feeling, just ask your mom!" Gruff responds, the horse laughing from the other side of the room

Unable to clean Sox completely, Gruff simply tightens on another diaper "I suppose this'll do, we'll wash you off when we get home, let's get back to mom"

Gruff redresses Sox and sets him down, the two then leave to return to their shopping.