Yes

Charlie took a few steps forward, studying the sleeping man. He definitely had a hint of Erin in his face, but he looked quite a bit like Charlie and their father. Charlie whispered to the man, "Erin, is that you?"

He didn't stir, and Charlie took a few more steps, standing only a few feet away from the familiar stranger. She heard a buzz and saw her sister's phone on the nightstand - it seemed Erin was getting a call. The man stirred a little, mumbling something as he groaned, and Charlie froze. He blinked and rubbed his eyes, speaking in a deeper voice than Charlie expected, "Who... what..."

"Erin, it's me, Charlie."

"But, why's my voice so weird? And you've got tits, Charlie" Erin said in a tired voice, his eyes squinting at Charlie.

"Yeah, I know! And you don't!" Charlie loudly complained in a whisper, covering her exposed breasts awkwardly.

"What? I..." Erin pushed himself to up into a sitting position and looked around confused, shaking off the sleepiness. The blankets fell away from his chest, and Charlie saw that he did, indeed, not have tits.

Erin started darting his head around, touching, feeling, and being frightened as the realization dawned on him.

"Charlie, I'm a dude and you're a fuckin chick!" He exclaimed.

"Shh! Let's not wake up Mom and Dad or Arthur."

"Okay, but what the fuck do we do?" Erin's eyebrows scrunched together, a look of both fear and confusion blending across his face.

"Well..." Charlie looked down at the bra in her hand, "Could you help me put this on?" She said, raising the bra shyly.

Erin shook his head a little, "Sure, but I, uh..." His face blushed, "Can you grab me a pair of underwear?"

Charlie made an "O" face and tossed Erin one of the boxer briefs. He caught is and slipped it under the covers, "I guess I don't have to worry about a top." He said.

Erin swung his legs out from the bed and ran his hands down them. They were definitely hairier than before. Charlie smiled a little as she saw the small bulge in her... sister's? Brother's? It didn't matter - there was a bulge in Erin's underwear.

He awkwardly stood up, and Charlie lunged forward with her arms out as he nearly toppled over. His arms stretched out wide, balancing the best he could, he gave Charlie a sheepish smile, "I think I got it." He said.

Erin turned to Charlie, "So, you're gonna wanna put it on like this," Erin grabbed the bra and moved it up and over Charlie's exposed breasts. The deep breaths of warm air brushed against her cold skin, and another rush of goosebumps flooded Charlie's body.

After a both strange and awkwardly tensioned bra session, Erin looked back at his phone, "Hey, Cheryl called," He picked up the phone and pressed play on the voicemail that he found waiting for him. They both heard a male voice coming from the phone, "Erin, if you're awake, call me."

"That's not Cheryl's voice," Erin said.

"No, Sam texted me earlier and said he saw Cheryl, but... that she looked like him. And I think he's in the same boat I am"

"Like what happened to us?"

"Yeah, I think so."

Erin's face was crossed with both anger and disappointment, "I don't want to be a dude!" He exclaimed, sweeping his hands out in a grandiose manner.

"And I don't want a be a chick either," Charlie said as Erin looked down, and sat back down on the bed. Erin sniffled, "So, what do we do?"

Charlie sat down next to him and hesitantly put a hand on Erin's shoulder, "Yeah, this kinda sucks, but if Sam and Cheryl are in the same situation... At least we're not alone."

"I..." Charlie saw Erin's hands dart over his crotch as his face went from a light shade of pink to a vibrant red, "Bro, I think... I think I have a boner."

Charlie pulled the hand away and smirked, but he couldn't quite keep the laugh in, "Ha! You're such a fucking dork, you know that, Erin?"

Erin gave him a meaty push as he wiped the tears from his face, "Thanks, asshole."

Charlie gave him a beaming smile, and Erin returned with a confused look. She said, "I'm gonna head back to bed, and to see if Sam sent me anything else. If you feel up to it, call back Cheryl and see what she - or he - is up to."

Erin sniffled and gave a nod and Charlie returned it. Charlie turned to the door, significantly more confident than when she entered. She shut the door as gingerly as she opened it, giving a wave to Erin as he picked the phone back up, intending to call Cheryl.

As Charlie turned around, he was met with a sight; a girl, roughly Charlie's age, perhaps a little older, stood in front of Charlie's door. The girl was wearing a T-shirt a size or two too large, and some pink polka-dot panties. Hair was a familiar blonde, and just as messy as Charlie remembered it being, "Arthur? When'd you wake up?"

The girl was taken aback, "Charlie?" She said in a familiar but much more gentle tone to Arthur's old voice, "Is that really you?"

"Of course it is, you dumb idiot!" Charlie said. She saw Arthur relax, straightening a little. Arthur was a little shorter than Charlie had remembered, just as she'd noticed of herself when she stood up.

"I woke up when... I think I heard you open Erin's door, but..." Arthur made a gesture at his body, "You know. I heard talking and listened in for a bit, I was just about to see if you were in your room."

"Fair enough," Charlie said, "Erin's... You should go talk to Erin, I'm going back to bed." Arthur nodded and said, "But... Why are we like this? I mean, what happened?"

Charlie shrugged, "I don't know, I saw a bright light, and then... now I'm this."

Arthur sighed, "Well, I'll see you in the morning, then."

"Good night, Arthur," Charlie said, opening her door, "Night, Charlie," Arthur said, opening Erin's door. Charlie could see Erin on the phone, and her face lit up as he saw Arthur.