You resolve to go see your sister, who was currently in her room, door open, talking to someone on the phone. She grins as you appear in her door-frame. The two of you have an excellent relationship for siblings, she being the one you looked up to the most since Dad went away almost ten years ago. Tracy was old enough to protect you from the harsh realities of being a single parent, and was able to care and protect you almost like a second Mom, while your actual Mom was away. She was a beautiful example of humanity, and quite pretty to boot, her long blonde hair always being kept neatly in a bun or pigtails on her head. She was terriffic at aclimating socially too, as while she was around you, she was a bit of a tom boy, but with her prissy friends, she was the girliest person you knew.
Whoever was talking on the phone with her seemed to be bothering her a little bit, from what you could tell by her facial expression.
"Yes." "No- Look, I know, but we've had our chances and it didn't work out. Don't let it stress you, you'll find someone else."
Sounded like she was talking to the boy she went on a date with recently, not that you knew much about her personal life, but from what she's been saying, he wasn't a very good fit.
The temptation was too great to ignore. Nothing was likely to happen, and if nothing did no one lost anything. Leveling the blowpipe at her, you inhale quickly, then exhale rapidly, and you feel your consciousness slip away for a split second before it returns, suddenly, you find yourself laying belly down on your sister's bed...
"But- we had something, I could just tell," a male voice said in your ear. "Won't you give me another chance?"
You froze, thinking of something to say, but pulled a blank.
"No, s-sorry," came a voice unfamiliar to your lips, and you fingered the 'hang up' button on your sisters phone.
Being suddenly super self aware, you sat up in your sister's bed. These nails, these hands, arms... breasts? They weren't yours, but your older sister Tracy's, whom you now found yourself unintentionally fondling.
"Holy- H-holy shit!" You shouted, jumping out of the bed to look yourself in the mirror. "Holy shit," you said again, pushing up with your new hands against her facial features, making silly faces, winking, sticking your tongue out.
You look to the ground to see your body now sat there, unconscious at the doorframe. You quickly pulled it in, being much harder than you anticipated with your new form, and checked to see how it was doing. Still lightly breathing, like some deep sleep. You sighed in relief, putting your unconscious body on the purple egg chair in your sisters room, and closed the door, looking back at your new, beaming reflection, and your exciting new discovery... how to even proceed?