my sister and incest (kinda)

so iwas mastubating the other day when my sister walked in! (i forgot to lock the door!) i said "oh, shit" and she just smiled, turned around, and closed and locked the door! by now iwas really freaked out cause she usually locks us together to make me do something or she would tell mom whatever dirt she had on me this time. but she just wlked torwards me and said " oh, am i interupting your happy time?" the she grabed my still erected dick, and gave me a blowjob! O_O she finnished it in her mouth, laughed, and opened the door and went to the bathroom across the hall. that was some crazy shit! she aint that kinda girl usually! now everytime we pass she giggles and makes a dorky smile.  

chirst your sister is fcukin whore