"I can't believe you're making better progress with your than I am with mine."

Erin shakes her head and squeezes your cock.

"I knew you would be jealous." You smile, feeling triumphant. Knowing that your success more than kinda turns Erin on. "How much progress have you made with yours?" You ask.

Erin shrugs. "We've made out in the copy room. And she'll let me grope her. But I still can't get into her panties."

You take a step back and look at Erin's gorgeous face. "Look at that face. How could she not want that in her panties?"

"Well, she's not gay and she's not bi. I'm trying to convince her that only a woman knows what to do to another woman's pussy. But it takes time." Erin shakes her head. "I knew I should have picked a male **** target."

"Well, that was an option for you. But you decided differently." You reach around your girlfriend and grab her ass. "I think you should have chosen Meg."

Erin shakes her head. "I know you think Meg would have been receptive, cause she's an artist, and more of a free-spirit."

"And she has a painting of a figure in bondage titled 'My inner self' or something"

"No. That's not true." Erin says. "It's titled 'My true self.'" She lowers her eyes, conceding defeat. "There are lots of other issues with making Meg my **** target."

"Such as?"

"She's my sister."

You shrug. "Small deterrent."

"Oh yeah, would you fuck your sister?" Erin asks, finally slowly pulling your hard member from your boxers and starting to stroke it.

"You've pretended to be my sister before." you remind her.

She shakes her head. "You just want to watch me and Meg fuck." her voice drips with dirtiness when she says the word 'fuck' as if she hasn't pictured the act of 69ing her kid sister dozens of times.

"If I win this contest, I may." you smile

Erin slowly squats down in front of your member. Staring up at you with her big brown eyes. "God, walking in on you and that woman has made me so fucking horny." She holds up your cock and gives it a long lick from it's base, just above your balls, to the tip, pulling her tongue back so you can watch strands of precum stretch between your cock and her mouth.

"What do you want to do about it?" you ask