A surprising offer

When I followed her upstairs this was the last thing I expected. Door locked me crawling away in terror on her bed as my elder sister shed her clothes. Stalking me with a sultry predatory look in her eyes. "W...what are you doing Lauren?" My fear obvious.

"What does it look like little bro. I'm about to suck that big cock you've been failing to hide in those jeans since puberty." She licks her lips. "I've seen you. Looking at me, lusting for me. Lusting over Mom, and Karin. And look at them! One afternoon alone with you and they are all but crawling over you." She looks in your eyes. "I always knew you were to smart. That someday you would apply yourself and get everything you wanted. I just never guessed you'd start with us."

"Then why aren't you running." No escape, she's already tugging down my pants. My cock springs out and waves between us. "Why wouldn't you fight this?" Her hand stratches my cock and I moan. Her hand is soft and smooth, firmly and expertly manipulating my cock.

"Because you aren't the only pervert bro." She leans her head forward. "The thought of this is making my cunt leak and before my mind is broken like Karin and Mommy I want to fufill my long surpressed desire.... for brotherly love." Her lips surround my cock and slowly sink down.