"Hey Mon." Rachel strolled into her best friend's apartment, pretending that absolutely nothing was up. Both she and Ross had decided that it wouldn't be worth it to try to convince Monica and Chandler that they switched, so she had to keep her cool. Which, given her very excitable personality, was not easy. "What's up?"

It took Chandler a minute to grasp that Ross was talking to him. "Oh, uh, hey Ross. About that Knicks game next week…"

Rachel looked at him with a perplexed expression. "Why are you going to a Knicks game? Joey had a hot date?"

"Er…yes?" Chandler stammered, dumbfounded. For some reason it hadn't occurred to him that while he was in Monica's body he would have to act like her. "Well, Chandler, uh, told me to tell you to forget about it since my…his boss gave the tickets to somebody else."

"Right…" Rachel stared at him, bewildered. Shaking it off, she inquired, "Anyway, did you save that latest issue of Cosmo for me? I've been dying to read that interview with Brad Pitt for weeks –"

"I'm sorry, I must not have been there when you announced that you were gay," Chandler quipped. Ross was reading Cosmo?

"I mean, um, Rachel has been dying…" Finally it clicked in her head. They were both horrible actors. "Chandler, is that you?"

Chandler jumped, then leaned in close to who he thought was Ross, as if his x-ray vision would kick in and he would see who was really inside. "Rachel?"

"Oh my God!" Rachel began hopping up and down, incredibly thankful that she and Ross weren't alone. Enveloping Monica, well, Chandler in a big hug she shrieked, "This is great! It's not just us!"

"Wait a minute, us?" Chandler questioned after ending the embrace. Whether it was really Rachel or not, he was still hugging his male friend. "You mean…"

Rachel nodded. "Yup! Ross is pregnant!"

Chandler was amused by the fact that Rachel appeared deliriously happy at the thought. "He's not so thrilled about this, is he?"

"Nope!" Rachel shook her head. "He's totally miserable! He spent the morning throwing up, and is now making his way up the stairs by himself since he refused my help."

Chandler chuckled. "I just can't get over the fact that we couldn't fool each other for five minutes."

Rachel waved a dismissive hand, once again making Ross look quite girly. "Please. We all know each other so well. If one of us ordered the wrong coffee at Central Perk the others would be suspicious."

"True, very true," Chandler acknowledged. "Hey, I got an idea. Let's mess with Ross and Monica."

Rachel laughed. "That's cruel, yet strangely appealing…let's do it! How about, I'll make Ross look like the gayest cowboy in Texas, and you just be all gal pal with 'Rachel'."

"I have a whole new kind of respect for you," Chandler admired.

Rachel paused, then squealed, "He's coming!"

"God, Mon, did you ever realize how many stairs your apartment building has? There are like a million!" Ross wheezed, squeezing his belly through the door and going over to sit at the table.

"Well, I offered you my help," Rachel taunted.

Ross sent her a look. "I wanted to prove that I have stamina and can do it myself, thank you very much."

Chandler was suddenly hit with inspiration. "Hey, Rachel, do you happen to have a pad in your purse? I've been getting these really bad cramps all day."

Both Chandler and Rachel could barely contain themselves at Ross' reaction. His face had made it obvious that he was completely disgusted. "I don't think so."

"Hey guys, what's going on?" Monica came into the kitchen from the bedroom, totally clueless as to what she was walking in to.

"Oh, just some morning conversation," Chandler answered innocently, causing Rachel to finally burst out laughing.

Monica stared at who she thought was her brother. "What's with you?"

"Nothing," Rachel assured her. With that she walked to the bathroom, making sure she swung her hips, as she would do with her own, non-pregnant body. She could practically hear Ross wincing.

"Hey, Rach, you know who just called?" Chandler asked, directing his question at Ross. He could feel Monica's eyes boring into his skull. "Christopher Jacobson. You remember, Ross was friends with him in high school?"

Rachel didn't really have to go. She had paused outside the kitchen out of sight to allow Chandler to mess with Monica's head for a minute or two. She was glad she did - she knew where he was going with this, and she wouldn't have missed it for the world.

Ross raised an eyebrow. "Faintly."

Chandler gave a dramatic sigh. "Please, how could you not remember? That one New Years' Eve, didn't you and Chris –"

"You know, why don't I make everybody breakfast?" Monica interrupted, going over to the stove.

Ross stood, which wasn't easy. "Hold it! Okay, first of all, why is Chandler cooking breakfast? And, more importantly – what the hell did I ever do with Christopher Jacobson?"

"Oh my God, I remember him!" Rachel chirped upon rejoining the kitchen. "Wasn't he that, like, totally hot senior with the perfect hair and gorgeous smile?"

It took about one second for the siblings to get what was going on. "You know!" This was exclaimed unanimously, reminiscent of when Monica and Chandler's relationship was first exposed.

"So how did it happen?" Monica inquired, turning to Ross and Rachel. "We just woke up like this."

"Us too," Rachel informed her. "We freaked out."

"Well, you freaked out," Ross reminded her. "I was too busy barfing my guts out. Seriously, how do you have any insides left for the next morning?"

"So does anybody have ideas on how to fix this?" Chandler interjected, wanting to move away from their current subject.

"Our plan was to just go with the flow," Rachel answered. "And hope to God that we would wake up the next morning in our own bodies."

"I'm still trying to figure out how this happened, scientifically speaking," Ross scratched his head, causing Rachel's body to look intellectual for a split second. "This is theoretically impossible! Maybe we interacted with some kind of chemical…If we did, in order to switch back, I'm thinking we would need to take the antidote…"

"That's great, Einstein," Rachel huffed. "The question is – what chemical do we need to find the antidote to?"

At that moment, the door opened to reveal Phoebe, who was particularly chipper due to her success with the potion. "Hey everyone." She paused, sensing that the group's mood wasn't exactly cheery. "What's going on?"