Too late; your sister's home

Just then, you hear someone stomping towards the kitchen. Flying into a panic, you stuff your cock back into your pants. Then you slide a dishtowel along the handle of the cabinet, so that it covers up the blobs of cum sticking to the side.

Before you can do anything about the dosed juice pitcher, your sister Julie comes barreling into the room. She looks quite a lot like your mother, just like she did in your old world: skinny build, brown eyes, and dark, shoulder-length hair that's currently up in a ponytail. She's wearing workout clothes, and her busted-up MP3 player is strapped to her side; she must be coming back from one of her epic marathon runs.

"Sup John," Julie says, jogging over to the counter and then stretching to reach the top shelf. She grabs a big glass, moving it towards the sink... But then she notices the pitcher. "Oh hey, perfect."

You take a step back and watch in horror as she pours herself a glass of ****-up grapefruit juice, then downs the whole thing. "Shit, this is good," she continues, refilling her glass.

"Wait, Sis--"

She pauses halfway through chugging the second cup. "Mm?"

You try to make up a reason for her to stop drinking, but you can't think of one that doesn't sound absolutely nuts. "...Uh, nevermind," you mumble. "Forgot what I was gonna say."

"Mm." Once she finishes her second glass, she puts it down for a moment... Then reconsiders, pouring a third.

Oh, fuck... This shit is getting out of hand. She's gonna drink the entire thing, and then... Then I don't know what. Total fucking disaster?

You keep trying desperately to make up some excuse, but your sister's chest is heaving in her skintight top, and your ****-enhanced cock is twitching again... Before you can get your thoughts in order, Julie has finished the entire pitcher.

"Whew... Damn, that was amazing. Guess I got a little dehydrated," she says, throwing the glass and the pitcher in the sink. "Oh, uh, I hope you didn't want any?"

"N-no, I made it for you."

"Aw, thanks!" With that she takes off upstairs, probably to take a shower.