While she's in the bathroom, Marcus becomes her look-alike
After Grace and Marcus talked for a short while, she was fairly certain this house was a lost cause. It was unlikely this family would vote for her candidate. She decided to leave, but first...
Grace asked, "Um, Marcus, may I use this house's bathroom?"
Marcus responded quickly, "Sure, then you can head out."
As Grace headed for the bathroom, she felt a small nip on her elbow. "Darn, bugs!" This house is full of annoyances, she thought as she entered the bathroom.
In the kitchen, the nanoflies swarm began to grow. The first few had found a organic pattern, and the hive mind now rapidly built copies of themselves. The knives, plates, and other tools started to disappear as they were used as fuel to create new flies. The swarm converted more raw materials until their sensors identified a new organic life form nearby. It was not like the original. The mass moved from the kitchen to the living room.
"This girl sure does take her time..." Marcus commented to himself. The boys were working on the Bugatti model, while he was stuck listening to some political bullshit. That's when he heard a cacophony of buzzing. Then he saw it.
Quickly, he felt a surge of small pains these insects were either stinging or biting him a lot. They had him completely surrounded. He opened his mouth to scream for help, but the flies took the opportunity to enter his mouth. His body was completely changing during this attack. Marcus slumped to the ground.
Marcus' once messy hair was now short and blond. His pants had been reformed into a red business skirt which contrasted with his now blue eyes. His once hairy legs were covered by black nylons, and bare feet had perfectly fit heels. The loose fitting t-shirt he wore before was replaced with a white blouse and stuffy black suit coat. His once chiseled chest now began to puff more and more till it pressed against his top. Shortly, after his b-cups came in, a white bra formed to support them. His skin once covered in tattoos became smooth and clear skin besides the light makeup on his face. Most of Marcus' piercing ended up disappearing except for on his lower ear lobe which now were occupied by some simple earring studs.
Marcus felt like he had gone through a marathon sprinting. Trying to get up his body was wobbly and tired, and the heels didn't make it any easier to get up. He was noticeably shorter than before at least 6 inches.
"What happened to me?" Marcus asked aloud in his new feminine voice.