Chic lingerie on a lush woman's body, who wouldn't fall for that? Especially if a woman is so actively interested in sex with you. Normal as it is in the home and without fanaticism. You can feel that this is not the first time with this woman and I'm sure it's not the last.
That's the kind of slutty sister every brother would let work his testicles. And this one probably accustomed her to these pranks a long time ago. At least that's what I would have done. She'd have to suck and spread her legs anyway, so why not with her own man? It's about time she got her ass printed, too, so she can date like a grown-up bitch. Or maybe she's still trying to keep her anal virginity for her husband.