*use of taboo trigger word* You are waiting in your sister's room since you knew she snuck out for a new tattoo. She's not supposed to get new ones until she moves out of Dad's house, so you're there to get her in trouble. She tells you not to say anything to him, and eventually she gets desperate, offering you head to keep your mouth shut. You of course say yes, so she sucks you, trying to get you to cum in her mouth. You say you want to cum inside her pussy instead, and she reluctantly takes her pants off and climbs ontop of you. She would rather commit these sick acts with you than let Dad know about her new tattoo. She rides you and grinds on you, trying to get you to cum before she does. Unfortunately, she cums too quick, writhing ontop of her brother's thick cock. You finally cum inside of her, flooding her with a fucked up creampie. Little do the both of you know, you two may not have been as secretive as you thought... Keywords: taboo, roleplay, impregnation fantasy, brother sister, tattooed, brunette, creampie, blackmail, caught, family