On a 7-9, they'll do it if you turn them on.

Jenna laughs, "Oh, I will baby. I want to share that big cock of yours with my little sister. But first, it's my turn. You're mine now, tied up and helpless, and you're going to do something for me."

Jenna climbs onto the bed, and lifts one long, perfect leg over your head, straddling your face. Jessie watches eagerly as Jenna gyrates over your face, clutching her little boobs. Your girlfriend's pussy slit is smooth and tight, and wen she reaches down between her legs to rub it, the inside is hot, pink and wet. You breathe in her clean scent as she lowers herself down on your face.

"Ooh, oh yeah baby," Jenna moans, "Oh yes, show my little sister how you eat my cunt." You lap at Jenna's hot wet snatch, loving the feel and the taste of her, loving the sounds she makes as she reacts to your tongue. You know Jenna so well, you know what she needs, and you give it to her. Long slow licks from her buttcrack right up to her swollen clit, probing your tongue deep inside, then licking and sucking her little clit hard. Jenna bucks against you, moaning, fucking your face. "Yes, yes, yes!"

Jessie just watches, playfully lapping at your balls. "Mm," she says, "that's soo hot!"

Jenna rests her hands on your thighs and lowers herself down. You can feel both girls' breath hot on your throbbing cock.