Life of a 13 year old- Stick a hair brush in her ass
You say, "I bet you love the feeling of my sperm sloshing around inside your bowels don't you sis?".
"No that's disgusting get it out!", she replies.
You reach for the shower rack and feel around until you grab onto a hair brush. You quickly retract your still hard prick out of her anus, only to replace it by shoving a hairbrush inside, forming a tight plug.
"Auuuugghhh!"
"Now you can keep a piece of me inside you all night long."
"Your fucking crazy if you think im willing to do that. Screw you, i'm going to tell...". You interrupt her by forcing her head down to clean your cock. She gasps is surprise and tries to force your penis out.
"Suck sis! You can't tell mom and dad with my pee pee in your mouth can you?". She grudgingly loosens up and accepts your assault.
You reach down, gripping her wet hair, pulling her head down deeper around your cock. Smiling as you watch her start to gag, choking on it as you suddenly slam into the back of her throat. You reach down and grope her breasts, letting her suck on your prick. Before you know it, you cum inside her throat. She glares up at you, chin dripping with sperm.
You: