Not even a chance (, cumswap)

You take a few steps though its mostly through your sister guiding you. Your whole body is still fuzzy and your mind wanders. Where were you going again? The toilets you think but why? Wait does she want to clean your cum off but it feels so good~. You don't want her to, she doesn't realise how good it feels on your face and down your throat... you have to show her...

and you know just how to, collecting a good amount of cum into your mouth as you wait a few seconds to pounce readying your catch. You took a metaphorical gulp not wanting to risk swallowing any cum your sharing as you spoke... "s-sis" you ask sounding as if you Adam's apple just got disappeared but you cant think about it for too long. "Yeah br-" as you immediately strike.

Pushing your entire body onto her as you seal your lips around hers, her eyes widening in shock as you push all the sticky substance into her mouth. Your hand moving to hold her lower back as her hands try to push you away but they seemingly have no energy or effort in the push. As her eyes seem to be staring at you but also out of it, your hands slowly moving down to the bubble butt to play around with the soft and squishy asscheeks. It feels like minutes pass by before you suddenly feel her tongue pass back some of the cum, sending a fuzzy high as you cant help but share it back without a word.

Your impromptu make out lasts forever only stopping occasionally to collect more cum to swap off your face. Each other's hands groping the opposite ass as you eventually find yourself with no more cum to share but both equally lusting for any and all of it.