Family Ties/Ask her to show you her tits
Your sister can read you pretty well. You were actively checking her out and though you may be little, even you can notice what a fox she is. "So what if I am..., common Heather show me your big tits since you don't like me looking at moms" You say trying to sound more confident then you really are.
"What are you fuckin'..." Heather's words drift off and a smirk works over her supple lips. "You like big tits huh...Fine" she says almost defiently. Then she grabs the bottom hem of her top and pulls it slowly up and over her head, revealing her naked breasts to you and tossing the top on the bed staring down to see what you do next. Her tits are gorgeous, large without a hint of sag, a bit tan with large flesh colored nipples that are erect from the cool air touching them.
Do you: