The class got out of the bus. "I've taken us to a very similar universe," said Mrs. Raiford. "Some universes are so similar to our own that, under the right cercumstances, we might be able to travel between several and not know it. The one that we've gone to is one of those very similar universes; one with a single physical difference. You should be able to spot it fairly easily. Now let's go out and explore."
The class divided into pairs; Karyn and Jon went together. The town was identical to their own town, so Jon wasn't sure what was supposed to be different in this reality. After a while, Jon noticed that there was something different, though he couldn't quite put his finger on it.
"I'm not sure how comfortable I am with this," said Karyn. "People keep staring at my chest. And not just the guys, either. I've gotten more awkward stares from other women than from guys."
Jon looked around. It was true; people kept staring at Karyn, or rather, Karyn's boobs. Passing by an outdoor cafe, he saw two women sitting together. He heard one of them whisper to the other, "Look, Lisa. See that girl's breasts?"
"Yeah," said the one called Lisa. "They're so tiny. My chest wasn't that flat since I was twelve. I was such a late bloomer; I'm so glad that I finally grew to normal size. I wonder what caused her to be so underdeveloped?"
"I wonder how she stands it," said the first woman. "Can you imagine what it would be like living like that? How many guys would be attracted to such a flat-chested girl?"
Jon glanced at Karyn's breasts in comparison to the two women's, then did a double take. Their boobs were at least an I-cup. The gigantic mounds of titflesh spilled out over the table they were sitting at. Jon looked around at other women. Almost all of them had gigantic bustlines. The women at the cafe were right; for this reality, they were average and Karyn was incredibly small chested. Many woman were even bigger than that, their massive bosoms bouncing and jiggling as they went about their everyday business.
"Karyn," said Jon. "I know that girls don't check out other girl's boobs the way guys do, but I think that you'd better check out theirs, especially in comparison to yours."
Karyn gasped, then started crossing her arms over her boobs. "I must look as bizarre to them as they do to me," she said. "I wonder if Mrs. Raiford knew that this universe had this particular difference and if she chose it on purpose?"
"Either way," said Jon, "we've found out the difference. We should probably head back to the bus before we get too many more stares. Geeze, I like big boobs as much as the next teenage boy, but this is creeping even me out." The two quickly made their way back to the bus. As the town was otherwise identical to their own, it wasn't difficult.
