Bill had just seen the last Avengers movie last week, the one with the Infinity Stones, so when he noticed that the mysterious gemstone he found was suddenly glowing in Gloria's hand, red flags started going off in his head.
“Gloria” he said calmly but firmly, “Could you give me back my gemstone, please?”
Gloria turned from Tom to Bill in exasperated annoyance and gave a disgusted sound.
“Seriously, Bill? Of all times, you pick this one?
“Just give him back his toy, Gloria!” said Tom, trying to defend his good friend.
“Shut up, Tom!” shouted Gloria.
Indeed, Gloria had been trying to avoid a situation like this when she approached Bill's house, and the fact that she wasn't prepared to deal with when things turned bad or at least just not turned out the way she wanted it to was stressing her the hell out. She was used to laying down the law with her friends and her friends spinelessly just going along with what Gloria wanted out of fear or self interest. Subconsciously, Gloria suspected that she probably got this trait from her mother, but right now she wasn't interested in soul searching. She was hurt, and she couldn't understand why Tom and Bill were teaming up against her. So she exploded.
“I just wish you and Bill could just feel the pain I feel!” she screamed with indignant umbrage. As she did, the Ahn'Ger stone exploded into action. It suddenly felt deathly cold, causing Gloria to drop it. The entire block glowed in its brilliant green light.
“I was afraid of this” said Bill quietly to himself before the three of them were immediately transported...
...to Gloria's own home.
“What the hell just happened!?” yelled Tom, but somehow he heard Gloria's voice instead of his own.
Gloria herself now realized that she was sitting in her living room on the large, comfy red couch she passed by every morning. She looked around. Yeah, this was definitely her living room.
“What the hell?” she said, repeating Tom's own refrain. “How did I get back here?”
Sitting next to her on either side were identical copies of herself. Both girls had the same black hair, the same green eyes, the same facial structure as her own. Hell, they were wearing the same exact clothing as she was. They both were wearing same sandals she was wearing, and each had the same silver toe nail polish she did. They were twins...no, triplets. Identical triplets.
“Who the hell are you two!?” yelled Gloria as the two impostors were staring at their hands in disbelief. One had even pulled a mirror out of their purse and stared slack-jawed at herself.
“Oh my god” said Bill. “I've turned into Gloria Vanapoulos”.
Suddenly, the three teenagers were interrupted by an older female voice coming from the top of the stairs.
“Gloria, Natasha, Ursula...what are you all still doing here?”
Option 1: Gloria's mother Ariadne comes downstairs and see her three daughters. She chases them off to school.
Option 2: Gloria's mother Ariadne comes downstairs to chase her daughters off to school...but she notices the Ahn'Ger stone just laying around on the floor and picks it up.