She grabs Michelle and lays her on her back.... and sits on her face!

Patricia grabbed her friend and laid her on her back and said in a boom, "sorry, girl! Nothing else is big enough to get me off!" Then, she slammed her huge ass down as the world quaked. She started grinding on her friend's face as her ass slowly expanded over the dwindling Michelle. The skyline slowly filled with more of Patricia's ample backside as her feet crushed more and more people around the city. She leaned forward and slammed her breasts on neighboring uncrushed urban sprawl... then shot up thousands of feet tall as Michelle dwindled even more!

The spectacle going on was incredibly hot and terrifying, but you shook yourself back to the horrid reality: walls of flesh were expanding all around you. Her legs completely covered your peripheral vision and her ass covered the city proper and more slowly expanding towards your apartment complex. It was only a matter of time before it ran you, and possibly all of California over. You looked to the laptop and typed , "why is this happening?" Hoping something would happen. The screen displayed "Quantum integrity compromised. Changes unstable, subjects absorbing energy from like matter to fuel Quantum Change without destabilizing reality." You yell at the machine, "does this look stable?!" You start typing "restart" and "reset" and various forms of those phrases hoping itll get fixed. You hear a load snapping sound followed by a hurricane moan and then the earth shook. Your apartment jetted up while others fell onto a crack as you saw several thousand feet of ass balloon suddenly and then more city areas crushed and the expansion redoubled as she stood and shoved chunks of literal earth against her pussy and you saw no sky, only Patricia.... "Oh yeah, this is great! It takes more than a whole city to get me off..." she took a few giant steps over and each step felt worse than any earthquake you've ever felt. Her giant hips swayed as she let the chunks of city fall out of her hands. Then she giggled, still louder than any sounds you heard before today and said in a husky tone , "Hey, San Francisco!" As she shook her ass, "you think your city can handle all this?!" And she threw herself down, sending a shockwave of insane **** out and you saw the entire city vanish under an ass that nearly doubled in size. The expansion pushed the shockwave of rubble forward and you heard a loud "YESSSSSS". You could barely see beyond the towering ass that took up the whole skyline, even though she was still sitting... and she was still growing!