A picture of your sister...

You find yourself looking at a picture of your sister... You had managed to sneak a pic of her when she was changing a little after her 18th birthday... She's standing with her side facing you, her head turned away as if distracted by the forces that be just so you could get away with this one image... Her side offers you a nice profile of her young perky tits as well as her supple ass poking out behind her... You grin as you lay in the bed and kick your underwear off... The feeling of the taboo edges you harder as you wrap your fingers around your little cock, stroking it hard to this forbidden image of your sister... It doesn't take long at all for you to come... Your little dick sputters and shoots out a thin stream of cum directly onto the picture... "Fuck..." You whisper as you comtimue to stare at her... You lay there panting for a bit until you look over at the clock... 5:50! The bus would be here at 6:30, no time to waste!