The younger sister of the listener’s girlfriend drops by unannounced while her sister is out. She openly calls out how her sister used to be incredibly slutty and eager in the beginning of the relationship but has since become reserved, boring, and rarely initiates sex. Jealous and determined to prove she’s better, she launches into a bold seduction: teasing comparisons, stripping down to a tiny thong, a long sensual blowjob filled with worship and self-degrading dirty talk, and passionate sex on the floor where she begs to be used as a younger, tighter, filthier replacement.