The Chest-Changing Christmas Cookies

Christmas Patreon commission for Peter Kile! Thanks for supporting my work! <3

//short ramble below//

My Christmas was . . . terrible.  The worst one I've ever had.  I don't want to discuss too many details.  But if you could leave some kind words or Christmas wishes in the comments, I'd appreciate it very much.

//short ramble end//

Enjoy the story!  & vote on next week's Patreon commission! https://www.patreon.com/posts/60300470

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“Mmm, these Christmas cookies turned out AMAZING!” Rose declared, taking her baking sheet out of the oven.  The blue Lucario let out a happy sigh, and took a moment to take in that freshly-baked scent.
“I’ll say,” her brown Lucario husband, Luke, added.  He was sitting at the kitchen table, but once he saw those cookies—all beautiful, delicious sugary goods, in various holiday themed shapes—he stood up and walked toward the yummy dessert, already drooling over them.  “I can’t wait to try one!”
“Not quite, mister!” Rose told him, chuckling and placing the baking sheet on top of the oven, which she switched off.  “Don’t eat any of those yet—Aqua, Raymond, and Peony are coming over later, and these are for them!”
“Aw man!” Luke pouted.  “I can’t even have /one/?”
“Nope,” the blue Lucario replied, chuckling.  “And if you eat any, I’ll know, ok?  Those cookies are booby trapped, after all.”
She smiled and stretched, then walked toward the kitchen’s exit.  “I’m going to freshen up before our guests arrive, then continue making the food.  You wait for me in the living room, ok?”
“Sure thing!” Luke replied.  He watched her go, and listened to the sound of her footsteps.  Once he heard the sound of the bathroom door opening and closing, the brown Lucario made his move.
He tip toed towards the batch of Christmas cookies, drool forming in his mouth once again as he approached the tray.  “Oh boy, do these look delicious,” he murmured.  “I’m sure Rose won’t mind if I ate just one of them. . .”
After pondering for a bit, Luke settled on eating the smallest cookie: a tiny gingerbread person covered with dark chocolate and mint cookie bits.  The brown Lucario plucked the piece from the tray and popped it into his mouth.  His shoulders visibly relaxed as he chewed on the cookie, and he let out a happy sigh.  “Mmmm. . . That tastes /so/ good. . .!” he mumbled to himself.  “Rose really /does/ make the best Christmas cookies ever!”
Once he was done chewing and swallowing the dessert, it was /very/ tempting not to take and eat another one, but Luke managed to resist.  Instead, he reached over and rearranged the tray slightly, so that the missing gingerbread person wouldn’t be too noticeable.  “There we go,” he muttered to himself.  “That should do it. . .”
But then, the brown Lucario heard the sound of the bathroom door opening, then footsteps heading towards him—Rose was on her way back!  Quickly, he made the final touches to the cookie sheet, and scrambled into the living room, plopping himself down on the couch and switching on the television as if nothing happened.
A moment later, Rose returned.  “Ah, that’s much better,” she declared.  The blue Lucario was now wearing a nice Christmas dress, with red and green pooka dots running along the fabric.  “Now to put the finishing touches on dinner before our friends arrived. . .”
Luke heard his wife resume her work in the kitchen, and he let out a quiet sigh of relief.  He had eaten the cookie and gotten away with it!  Of course, he would probably tell her of the deed after their friends left, and they could both have a little laugh about the situation.  But for now, he’d done it!
The brown Lucario leaned back on the couch and settled in, watching /Elf/ as it played quietly on the TV.
But that was when it happened.
Luke felt a strange . . . /tingling/ at the center of his chest.  He idly scratched the spot where it was coming from, but the sensation quickly spread, until it covered the whole area under his collarbone!  “What the heck?” the brown Lucario muttered.  “Did I eat something funny?  Weird. . . What’s going on here?”
And then, before his eyes, his chest started to . . . /expand/?!  His pecs began to grow in size, stretching out his Christmas sweater as each of them increased in size.  Luke had to resist letting out a gasp—he didn’t want to get Rose’s attention, after all—as his body continued this strange transformation.
His chest expanded further, each side inflating into large orbs, filling with air and turning into breasts.  The growth was swift and large: his pecs increased until they were larger than large, bigger than any reasonable chest should be for a man or a woman.  The two spheres expanded incredibly in front of him—and they weren’t done yet.
Luke covered his mouth, suppressing a surprised squeak as his breasts grew even larger—now, both had ballooned way beyond a G cup, and were stretched out enormously in front of him!
But now, thankfully, the transformation seemed to come to an end.  The tingling feeling left his body, and his pecs stopped expanding.
What on earth had happened?  How had this occurred?!  The brown Lucario felt his mind racing as he tried to come up with an answer—
—and then, it all hit him at once.  The cookie.  What Rose had said.  Of course!  “Crap!  She wasn’t kidding when she told me the cookies were /booby/ trapped!” Luke muttered to himself.
But what could he do now?  After pondering for a moment, the brown Lucario remembered that his and Rose’s bathroom had a few Restoration Pills there—he could take one, and return to normal size!  He stood from the couch, trying to think of how to sneak past Rose—
“Ah ha!” his wife’s voice declared.  Startled, Luke turned to see Rose standing in the doorway of the living room, a smirk on her face.
“H-How long have you been there?!” Luke exclaimed.
“The whole time,” the blue Lucario replied in a teasing voice.  “I saw /everything/, love.  Anything you want to confess?  Did you eat a cookie, wise guy?”
Luke chuckled.  “Ok, you got me!  Guilty as charged, my dear; I’m sorry!”  Then, he frowned, and asked, “So how are our guests supposed to enjoy the cookies if they’re booby trapped?”
“I got an antidote with me,” Rose told him, taking a vial of liquid from her pocket.
“Ah.”
“Now, in any case, I accept your apology,” the blue Lucario said.  “Let’s get you back to normal, shall we?”
She walked up to her husband, and moved in to kiss him—but she forgot about the large spike on her Lucario chest.  And the moment she leaned in, it poked one of Luke’s inflated breasts!
The brown Lucario rapidly lost air and went flying around the room, until he landed deflated on the ground.  “Oops, sorry hun!” Rose exclaimed.  “Are you ok?”
“Yeah,” Luke replied.
Rose went up to him and brought her mouth to his.  She puffed air into him bit by bit, until his chest was back to normal.
Just as she finished, the doorbell rang.  The blue Lucario released her husband with a smirk and said, “Perfect timing, hun!  Looks like you don’t have to answer the door with those huge melons.”
“That’s a relief!” Luke agreed, standing.  “Now, let’s go greet our guests.”
Rose nodded, and they went to the door.  There was a fun night ahead of them.