Reluctantly agree

You stare at Jimmy’s thick, glistening cock hovering right in front of your face, still messy with your own pussy juices and remnants of his earlier cum. Your cheeks burn with deep embarrassment.

This is so fucking stupid... I just tasted his cum and now he wants me to suck his dick? But... if I drain his balls now, he’ll have less ammo later. Less chance of him flooding my womb by accident. Yeah... that’s my excuse. Purely strategic. Totally not because this body is curious...

You make a very funny, indignant pout — eyebrows furrowed, cheeks puffed out, lips pressed together in clear displeasure, even as your perky tits still shine with his drying cum.

“Fine, you disgusting pervert...” you grumble, voice full of **** tsundere annoyance. “I’ll suck it... but only because it’s better to keep your fat balls dry. The less cum you have, the safer my pussy is. Don’t you dare get any ideas!”

Jimmy’s eyes light up like it’s Christmas morning.

You push yourself up onto your elbows, lean forward with that same grumpy-indignant expression, and hesitantly wrap your soft lips around the fat head of his cock.

“Mmmph...” you hum in protest as the salty, musky taste fills your mouth again. Your tongue instinctively swirls around the head, cleaning off the mix of your juices and his precum.

Ugh... it tastes even stronger like this. So gross... but it’s so warm and heavy on my tongue. Why does my pussy keep twitching every time I taste him?

Jimmy lets out a shaky moan. “Haaah... sis, your mouth feels incredible... so warm and wet...”

Encouraged by his reaction (and your own twisted logic), you reluctantly take more of him into your mouth. You bob your head slowly, taking about half his length before pulling back with a wet pop, a string of saliva connecting your lips to his cock.

“Stop moaning like a virgin, you dork...” you mutter, before diving back in with an indignant huff.

Soon you’re giving him a proper, albeit ****, blowjob. Your head moves up and down his thick shaft, your soft pink lips stretching around his girth. Your tongue laps at the underside while your hand strokes the base that doesn’t fit in your mouth. Wet, sloppy sounds fill the room — gluck... gluck... gluck...

Jimmy’s chubby hand gently rests on your head, not pushing, just resting there in pure bliss.

“Fuck, big brother... you look so cute sucking my cock with that angry face,” he groans. “Your cheeks are all puffed out... and your tits are jiggling every time you bob your head... This is the best thing ever.”

You glare up at him with your mouth full, trying to look angry, but it only comes across as ridiculously hot. Your long brown hair sways as you work him deeper, occasionally gagging cutely when his cock hits the back of your throat.

This is so humiliating... I’m on my elbows, ass up, sucking my little brother’s dick while still covered in his dried cum. My pussy is dripping down my thighs again. I’m supposed to be keeping his balls empty for safety, but the way he’s throbbing in my mouth is making me stupidly horny...

You reluctantly push yourself further, taking almost three-quarters of his thick cock into your warm mouth, sucking harder while your tongue swirls around him.

Jimmy’s legs tremble. “Sis... you’re really good at this... your mouth is sucking so hard... I’m getting so close already...”

You pull off for a second, panting, a thick string of saliva dripping from your lips down onto your perky tits.

“Don’t you dare cum in my mouth, idiot,” you warn breathlessly, before immediately going back down on him with renewed (and very ****) effort.