(Originally done by Rdolan1272)
A few backwardly spoken words later and Zatanna was back to her usual self, but in a sign that she wasn't planning on staying big for long, she left her diaper on, just making it grow with her. Upon seeing the adult Zatanna still clad in a diaper, Diana broke out laughing. "You look silly, Tanna. Like a big baby."
Zatanna, who was gathering lunch supplies, stuck her tongue out at the girl. "You better watch it, princess, I'm big enough to give you a spanking."
"Nuh-uh," Diana protested. "You in diapers. I the big girl. So I spank you."
"Oh, really?"
Diana reached up and swatted Zatanna's diapered behind. Even though the little Amazon's hit felt like less than nothing, especially though the diaper's thick padding, Zatanna jumped and made a surprised noise to play along.
"See," Diana said, taking Zatanna's act at face value.
"Guess you're right," Zatanna replied. "I better behave and make lunch."
She got out a few slices of bread and made them some peanut butter and jelly sandwiches, cut the sandwiches into squares then added some grapes. Finally she magiced up a pair of sippy cups and filled them with milk. After setting a towel on the floor and placing the plates and cups on it, Zatanna got some wet rags for the inevitable mess and put them beside the plates.
Once she got Diana situated, Zatanna took a step back and called upon her magic, saying, "yM ydob ot s'anaiD tnerruc ega." Again her body shortened, pulling in on itself as the years spun backward, stopping when she was three. Her diaper shrank with her, as she only planned on staying this old to eat.
Diana stood up and studied the re-regressed Zatanna; she looked less than pleased. Zatanna was unsurprised to find the child-sized Amazon was a bit taller than her. "You too big."
"This is just for lunch. It'd be hard to eat if I was a baby."
"You are a baby," Diana teased. She pointed at Zatanna's thick diapers then back to her own training pants. "You in diapers. I wearing big girl pants."
Just to prove her point, Diana smacked Zatanna's diapered derriere, but now that they were proportionally closer in size—or more accurately, Diana was the bigger girl—the blow felt much harder, and this time Zatanna's jump and squeak was genuine. Diana thought it was funny and gave the smaller girl another smack. And another. And another.
"Ow!" Zatanna complained, squirming to get away. "Diana stop it, that hurts!"
But Diana, thinking it was a game, kept on and eventually got Zatanna pinned so she couldn't move, which was fairly easy since, even though they were the same age, Diana was much more developed thanks to her Amazonian ancestry. The blows began to add up and take their toll, and before long tears were streaming down Zatanna's face.
"Diana!" she cried. "Stop it! You're hurting me!"
Hearing the pain in her friend's voice, Diana stopped. She was shocked to see Zatanna was crying and felt guilty. "I was just playing," she said quickly, trying to deflect the blame.
"If that's how you're going to play, maybe I should age back up," Zatanna said, wiping her eyes.