Tanya loved her tits. They were large, firm, round, and bouncy. Tanya was quite proud of her big, natural melons, flaunting them and showing them off in skimpy tops that displayed her inviting cleavage. Everywhere she went, men stared at her funbags, making Tanya's pussy wet and gooey.
Tanya was not the only admirer of her melons. Her melons, in fact, had many admirers. One of these was her older brother, Russ. Russ jerked off to the thought of his sisters bouncing jugs with great frequency. Sometimes, he did this with her bras, ejaculating into the cups and getting a perverse thrill from knowing that his caked semen would be touching her nipples. Other times, he jerked off to his sister's Facebook photos. The majority of Russ's sexual fantasies revolved around his sister's gorgeous tits.
Tanya was, also, a fairly stereotypical dumb blonde. Thus, when Russ confronted her in the living room, while she drank in some mindless reality series about catty women with too much money and not enough cock in the mouth to keep them quiet, Tanya was all ears.
"What happened to your boobs?" Russ asked, sounding shocked and appalled.
Tanya looked down at her expansive cleavage in confusion and asked, "What?"
"Your boobs," Russ said again, pointing. "When did they get so small?"
Perplexed, Tanya looked again and said, "They didn't. What are you talking about? Why are you looking at my boobs, anyway?"
"Don't take this the wrong way," Russ said, "but they used to be impossible not to notice. I mean, sorry, but I'm a dude. It's kind of natural to look at boobs, no matter who they're attached to."
"You're crazy. There's nothing wrong with my boobs," Tanya argued, but she didn't sound so certain.
Russ shrugged and said, "If you say so. Take it from someone who notices these things, though. They're absolutely smaller than they were."
He left the room. Tanya tried to ignore it, but she loved her big tits so much that she thought about it for the next hour, growing concerned. When Russ walked through the living room later, he didn't so much as glance at her boobs, which only made Tanya more nervous. If Russ loved boobs so much and he didn't look at them, was he right? Feeling self-conscious, Tanya got up and followed him to the kitchen.
"You really think they're smaller?" she blurted, drawing his attention.
"Definitely," Russ answered. "Sorry, but I used to have to make a concerted effort not to look at them. It's just biology, you know. Now, I hardly even notice they're there."
Tanya looked like she might cry. Russ put a hand on her shoulder.
"Hey, it's alright. Lots of women have small boobs. It's nothing to be ashamed of."
"But… I don't want to have small boobs!" Tanya blubbered.
"Okay. Look. The only way to know for sure is to check, right? We can just do a cockpillow test the next couple of days and measure the results."
"A what?" Tanya asked.
"A cockpillow test," Russ said again.
"What is that? That sounds gross."
"Gross? It's a perfectly sound, scientific test to measure spontaneous breast reduction," Russ explained, sounding offended.
"Is that a real thing?" Tanya asked.
"Of course," Russ said, shaking his head. "Look, which one of us is the engineering student here?"
"Um, you?"
"Right. You'd say I'm pretty smart, right?"
"Yeah," Tanya agreed.
"Alright, then I'll help," Russ said, not bothering to confirm in any way that Tanya wanted help.
Tanya, concerned and confused, nodded her head and said, "I… I guess that's okay. Shouldn't I go see, like, a doctor or something?"
Russ looked offended and horrified, saying, "Seriously? What are you going to tell the nurse when you make the appointment? That you're suffering from spontaneous breast reduction? Jesus! Can you imagine how embarrassing it would be? She'd probably tell everyone she knew, and they'd laugh at you over drinks. I mean, if my dick were shrinking, I sure wouldn't want anyone to know."
Tanya blushed and said, "I… I guess so. So, you can help me check?"
"Yeah. Let's go upstairs. Just, let's be quiet about this, alright? I know you don't want anyone knowing how flat-chested you're going to be in a few weeks."
Tanya looked terrified at the idea. She followed Russ up to his room, where he shut the door.
"Alright," he said seriously. "Go ahead and take off your top."
Tanya dithered, her fingers resting on the hem of the top.
"You're sure about this?" she asked.
"Absolutely. Unless you'd rather I call the doctor's office and tell them about your condition."
"No!" Tanya said.