Roll stops farting only a full minute after Alt. Roll grins. "Hehe, might as well keep your butt out because we're going to have lots of fun with it."

"Alright, then, what will we be doing first?" Alt asks.

Roll grins and demonstrates by making her ass swell out until each cheek is 50 feet wide. Roll is back to her normal shape.

Alt blinks. "Huh, why'd you get rid of your cube form?"

Roll grins. "Hehe...I don't know...I guess I just like butts better. Speaking of which..."

"Oh, all right." Alt says, as she too makes her butt expand to the point where each butt cheek is 50 feet wide.

Roll grins. "Ok, now for my favorite part of this. If we did this right, then we'll be in for a very pleasant surprise." Roll says, as she suddenly starts letting a really long fart rip. As she does, her butt starts to actually get bigger.

Alt watches. "Wow...how are you doing that!?" she exclaims.

Roll shrugs. "It just works. Try it for yourself!"

"Fine, fine." Alt says, as she starts farting as well. "Wh-wow! It's really working!"

Roll nods. "Hehe, told you, now let's keep it going until our butts are nice and snug in this room!"

Alt nods, and the girls keep farting until each of their butt cheeks take up a corner in the room.

"Now THAT'S how you get a big butt." Roll says, with a wide grin on her face.

"I'll say. I think I'm starting to get used to this farting thing, too." says Alt.

Roll giggles. "Good! Because I want to find a place where we can make our butts even bigger!"

Alt shrugs. "I'm fine as they are right now..."