It backfires.

Janet looked around groggily. The first thing she noticed was her sister's hot little tits, straining against the fabric of her tight t-shirt like a couple of water balloons just begging to be-

"Janet!" Sam cried. "Are you ok? Why are you thinking about my breasts?"

They both turned to look at Jerry, who was struggling into a sitting position. "Shit," Sam muttered. Janet thought about all the stuff she could do with that dirty mouth on her sister and grinned predatorily.

"What the fuck just happened?" Jerry said. "What was that?"

"It was the same thing that made me like I am," Sam told him. "We were gonna use it on you, but it looks like it didn't work like we expected."

"You were gonna make him like you?" Janet demanded angrily. "Of course you were. But Jerry's a lucky guy, sis. Now I'm attached to him and you're stranded!"

She laughed; it was a cruel, staccato sound completely unlike her usual laugh. She continued. "Hey Jer, she's not stranded. She's attached to me. She can attach and detach to people at will. That means she's getting everything I'm getting from you, just through-"

She stopped suddenly and yanked down her top, revealing a cream-colored C-cup bra. "Christ, why do women wear these things?" she whined as she unclasped it. "It's just a withholding tactic to keep guys from looking at their boobs. Fucking sluts."

Her tits swung free and her arms flopped to her sides. She turned to Jerry and thrust out her chest with a conspiratorial smile. He reached out and began to squeeze her breasts roughly.

"Ow!" Sam cried out. "Jerry, that fucking hurts! What the fuck? Oh, no, Janet, I don't know if that's a good idea."

"It's a good idea for Jerry," Janet said with a grin. "You need to detach from me and attach to him. You're too mouthy right now."

"I know you really want me to, but I feel like- oohhhhh, what are you doing? Are- ugh!"

She had dropped to her knees and begun a coughing fit. When she finished, the unattached Sam stood and looked around mildly.

"I didn't know you could push me away like that," she said in a monotone. "I suppose now you want me to attach to Jerry?"

"Is she always this stupid?" Jerry asked.

"Yeah, but she's way less annoying when she's all blanked out like this. It might be fun to keep- no, let's just attach her. Ok, Sam, why don't you hook up to old Jerry for us?"

Sam regarded them coolly. "I feel compelled to point out that if I do that it will be very difficult to-"

"Shut the fuck up!" Jerry and Janet said simultaneously. Sam closed her eyes for a moment, then took a deep breath. When she reopened them, they had a hungry, malevolent gleam. She and her sister looked at each other, then at Jerry.

"Well," Jerry said, "Who's ready for some fun?"