An unexpected intruder

"What the fuck, Mom?!" a young, female voice exclaim from the door.

You look up and realize a teenage girl is standing right in front of you. She's seems to be your age, and has the same dark auburn hair, grey eyes and pale complexion as Gilian. She's wearing blue jeans with an old sweater. Even though she's not dressed as conservatively as Mrs. Porter previously did, it looks like her top is hiding her forms, though the pants outline very well drawn hips. She also has a pretty cute face, but her current shocked expression might not be her best.

Gilian is as shocked as her but stay motionless and don't disengage from your penetration. "Lisa... Sweetie... You're home soon!" she babbles.

"One of my teachers was sick, so I figured I could go home and... Wait, don't change the topic! Who's this guy, and what are you two doing? Why are you dressed like a whore? And why... why are your... tits... so big?"

You sigh and order "Shut up and stand still."

The youg woman open her mouth but find herself unable to answer, and quickly realise she can't get away either.