Massage those beautiful boobs.

You can't hold back anymore. It's just gone way too far and you can't stop until you've pushed the limit of these powers.

You kneel in front of your big sister looking up at her see that her eyes are closed and her face looks relaxed. You put your hands on her legs and then run them up to her stomach feeling her soft skin. Feeling her up like this reminds you of wrestling with her when you were younger and how you'd always get a little thrill when her boobs would press into you or your hands would brush across them. Never in a million years did you think you'd have a chance like this. Finally your fingers run over her tits, tracing the outline and moving over her pink nipples. To your surprise they get hard and you look up to make sure she's still asleep.

You lick your lips and become more daring, squeezing and massaging her boobs for all they're worth, feeling her soft flesh against your hands.

Your cock is rubbing against the soft skin of her calf as you make her boobs bounce by pushing them up on her cheast and watching them jiggle. You love shaking them and watching how the settle back into the perfect position on her chest.

Your sister must be unknowingly enjoying this because her mouth has opened a little and you can see her breathing a little faster. This only turns you on more and you put one of her sexy little nipples into your mouth, sucking and rubbing her breast looking up at her face. You suckle like a baby at his mommy's tit and your sister lets out a little moan making your cock twitch at her leg.

You can't hold back much longer... you feel like the cum could start rushing out of your cock any minute now..