After your shower

You step out of the shower and dry off. You wrap yourself in your towel and hear your phone chime.

"Challenge 3: Spend the rest of the night in only panties, You can only go into your bedroom after 9pm."

It's 6pm now, that would mean 3 hours in just your panties around your brother and Dad. You drop your towel down the laundry shoot along with the shirt you planned on wearing. You put your panties on and leave the bathroom. You head to the kitchen to check on dinner.

"What's for dinner, Dad?" You ask.

"Sloppy Joes" He turns to look at you "Jen, put some clothes on."

"Why? I think I should be able to dress however I want in my own home." You say blushing.

"I guess..." He says turning away from you.

Your brother Jason walks in to the kitchen.

"Nice cow tits, sis." He says giving one a slap.

"Dude!" You shout as your breast jiggles.

The doorbell rings. Jason ignores it and your Dad asks you to answer it. You think to argue but you just said you wanted to wear this. You go to the front door cover your nipples with an arm, and open it.

"Hi there, just need a signature for this." A delivery guy says without looking up.

He hands you a tablet to sign. You grab it without thinking, letting your breasts bounce unobstructed from view. He looks at you but doesn't say anything. You thank him, take the package and go back inside. You go back to the kitchen for dinner. Your Dad ignores you the entire meal. He goes to take a shower. Jason makes fun of you the entire time. After dinner you are about to head to your room but you remember it's not 9 yet. Jason passes by on the way to his room.

"Hey, want to play video games together?" You ask him.

"Sure, let me just shower real quick, wait for me in my room."

You go to his room and he heads to the shower. Your phone buzzes with a new challenge.

"Bonus challenge: Masturbate until Your brother finishes his shower. Bonus multiplier for each orgasm."

You lay on his bed and slide a hand down your panties and a hand on your breast. You insert a finger into yourself when Jason enters his room.

"Forgot my clothes- uh?" He says

You stop what you are doing and look at him in surprise. Your phone buzzes. You glance at it.

"Stopping now forfeits the bonus. He hasn't finished his shower."

You think that 'he hasn't even started yet' but you want the bonus so you resume your movements. This does not go unnoticed.

"Jen?" He asks, just standing there.

"Just go shower already." You say as you bite your lip while pinching your nipple.

"Well I just need to... find what I want to wear."

He slowly walks to his dresser. You don't want to cum while looking at your brother so you close your eyes. You hear him scrounging through his clothes. He is taking forever, but maybe this is to your advantage, you get more time to have more orgasms, resulting in more of a bonus. You buck your hips as your first orgasm hits.

"That looked fun." Jason says.

"S-shut up." You say keeping your eyes shut and your hands moving.

You hear him tapping on his phone but you ignore it, your second orgasm approaches.

"mmmm g-gonna c-cum." You moan

"Yeah, cum, you slut." He says, still in the room.

"J-Jason" You moan angrily.

"Yeeees?"

You bite you lip as you start cumming.

"What is it Jennifer Marie ******?" He says your full name for some reason.

You are too busy holding back your orgasm voice to answer him.

"Answer me." He says and he pulls on your free nipple

"AH OH GOD I'M CUMMING!" You moan loudly.

He holds onto your nipple throughout your orgasm. You don't get a chance to stop masturbating or you lose the bonus, but your body is getting more and more sensitive. You open your eyes and see he is aiming his phone at you. You hope he isn't doing what you think he is but you don't have the willpower to fight that battle right now.

"Jason, please, just go shower already." You beg.

"But what about me?" He says gesturing to the tent in his boxers.