Your little sister

Your little sister steps completely into the bathroom, locks the door and turns around. Her eyes widen and her jaws drops when she sees your pants around your knees and your hand around your hard cock. “Oh my god.”

You turn to her without thinking, without letting go of your dick. “I’m so sorry! I should’ve locked the lock.”

But she doesn’t scream in horror, her jaw stays dropped. Her eyes don’t look up from your penis. “Sorry if this sounds naive, brother. But are they all this big?”

Your hard cock throbs in your hand. You were so close. Your fat head is so engorged. You answer honestly, “I don’t know.”

Your little sister bends down to examine you closer. “It’s so veiny. It looks like it’s about to burst.”

She’s so accurate. You are about to burst all over her.

She looks up from your cock. She bites her lip. “What were you thinking about? What got you so turned on that you had to stroke yourself in the bathroom?”

Her playful eyes shine. She knows how you looked at her naked body: her perky tits, her itty bitty bald slit. She wants you to confess. Her finger reaches out and swirls on your bulbous head. “Were you thinking about me?”

She licks her lips, “You shouldn’t be thinking about your little sister like that. Especially since I just turned 18.”

You let go of your cock. If you keep touching it, you’re going to cum all over your little sister.

Your sister’s eyes flick to it then back to your eyes. “Can I touch it? I’ve never felt a penis before.”