No... Too risky...

The feeling of her movement against your hand makes you pull back, afraid she might wake up... You decide you've had your fun and it would be best to just finish while you're ahead...

You pull your finger out of her, and with it pressed under your nose, you beat your cock to the scent of your sisters pussy... You start stroking furiously, imagining your hand was her tight little cunt, getting pounded endlessly by your hard dick. You can hear Sarah's voice in your head as you stroke...

"Oooooh.... Fuck yes! Fuck me harder John! I love your cock! Please give it to me!" She screams in your fantasy, over and over until you spray your load deep into her cunt...

The thought of you cumming into Sarah's little pussy practically become reality as you begin to spray your load onto her slit... You don't even realize it, being so caught up in your dream until you open your eyes and see your load dripping down her...

"Shit...." You think to yourself, knowing that this probably won't end well... You quickly put your dick away and pull her nightie back down...

"Maybe she won't know..." You tell yourself as you head back to your room...