Lauren looked back over at Megan, who had fallen conspicuously silent.
"What? Can't think of a comeback?"
"N-n-no, that's my..."
"Your what?"
"T-that's my tea." Meg said, her blood running cold. All the color had run from her face.
"What? You don't even like tea. Besides? Who cares, it's just like, one teaspoon full. Learn. To. Share. Jeez, Meg."
Lauren took a big gulp from the mug. Megan felt like she was about to faint.
"Hmm, kind of a flowery taste... is this eucalyptus? I feel tingly."
"Heh, heh, yeah, it must be. Now gimme the rest of the mug, Lauren."
"What the hell? What is wrong with this t-" Lauren buckled over with a mixture of pleasure and pain. "AAAH! What the fuck?!?"
Meg's mouth felt dry. Why hadn't she hidden the tea, or just put it away, or anything else, for God's sake? Lauren was grinding her legs together, overwhelmed with hormones.
"Meg, is this some kind of crazy aphrodisiac or something? I feel like I could fuck a horse!"
Obviously the tea had taken away her inhibitions. So, Lauren hadn't realized the true power of the tea yet. Perhaps Meg could lie her way out of this.
"Erm, sure, that's it. It's an aphrodisiac. Don't drink it any more, it's really powerful."
Unfortunately for Meg, the second part of the tea now started to affect Lauren. The older sister could feel her breasts growing, even through the overwhelming tidal wave of pleasure that was overcoming her. Lauren only had one gulp of the tea, but it was enough to change her bust ever so slightly. Enough to matter. Lauren could feel that her bra was tighter than before. Lauren looked down at her chest inside her tank top. Yeah, definitely bigger. The hormonal response started to die down, and Lauren started to regain her senses. She was sweaty and also wet between her thighs, but at least now she could think again.
"Meg," she started, pointing at her boobs. "what the hell is this."
As far as Meg could think, she had two options.