After the weird but arousing evening, during which older brother Johnny had agreed to abstain from masturbation for two whole days, so that he could demonstrate to his curious sister a fully loaded male orgasm, the normal morning household routine felt decidedly odd. They were both eating breakfast with their parents at the kitchen table. Johnny was trying not to catch Jenni's eye but she was glaring at him, squinting suspiciously like a meerkat who's spotted an approaching cobra.
"Has he done something to annoy you?" Their mother asked, noticing her daughter giving her son the evil eye.
"Not yet," Jenni replied, "At least, I don't think so."
Johnny bit his toast and gazed out of the window.
"Johnny, you know that biology project?" Jenni toyed with her glass of juice, "The one you weren't supposed to finish yet? Did you... finish it anyway?"
"Um, no, not yet." Johnny wondered why she was bringing this up here, now, in front of THEM!?!?
"Are you sure?" Jenni elongated each word.
"Since when did you care about Johnny's studies?" Their father was looking at them both. Everyone seemed suspicious of everyone else this morning.
"Gah! I can't win. You moan when I'm friendly, you moan when I'm not. Fine! I don't care." Jenni pouted.
"Okay, okay, let's get through breakfast without a row, shall we?" Their mother left to finish getting ready for work, a minute later their father wandered off too. Left alone, Jenni grabbed Johnny's right hand and held it up to her nose. Very carefully she smelled his palm, investigating. She dropped it with contempt.
"You prick!" Jenni punched her brother on the arm.
"Ow. What?"
"You did it. And without me!"
"No, no I haven't."
"Then why does your hand smell of dick!?" Jenni is whispering but very loudly.
"Shhhh."
"Don't shhhh me, you bastard. You promised."
"Look, I haven't... finished."
"Hah!"
"I mean, I played with it a little. Just a normal, everyday waking-up wank. You can't expect a man to not touch himself at all! I bet you played with yours, didn't you?"
"Nevermind about me." Jenni looked at him like he was trying to sell her a second-hand car.
"Really!" Johnny smiled, "I have barely tugged on it."
"You haven't..."
"Spunked? No. It's all still there, swimming around in my balls, okay?"
"How do I know you're not fibbing."
"Why would I?"
"Duhr. 'Cause you're a boy?"
"And girls don't lie?"
Their mother walked back in, ready to leave for work. She noticed her children were sitting in silence.
"You've had a row, haven't you? I knew it. You two'll be the death of me, I swear."
"I said I'd help Jenni with something, but she doesn't believe I'll, er, um, come through with it. She just naturally assumes I'm going to let her down."
"Like all men." Jenni played along.
"Well," their mother pondered as she gathered her stuff together, "What motivation have you given him to make him keep to his word?"
"Motivation?" Jenni looked puzzled.
"What does HE get out it?"
Jenni and Johnny looked at each other.
"There's no such thing as a free lunch, my girl."
Their father entered and chipped in, "You don't get nothing for nothing. Come on you lot, let's get going." They each grabbed their bags and coats and headed out.
*******
Jenni and Johnny are sitting on the back seat of the family car on the journey into the city. Jenni pulls out her workpad, turns to a new page, writes and then shows her brother: 'What DO you want as motivation?'
Johnny grins and writes: 'What do you want to give me?'
Jenni writes: 'Not THAT.'
Johnny rolls his eyes and writes: 'I wasn't asking for that.'
They watch out of their windows for a minute then Johnny takes the pad again and writes: 'I WANT to do this. You don't have to offer me anything more.'
Jenni writes: 'I don't believe you'll be able to hold out for two days.'
Johnny can't argue with that. He writes: 'I am a horny little bastard, it will be horrendously difficult.'
Jenni bites the end of her pen for a few moments then writes: 'I'll wear this pair of panties for the whole of the two days. If you can do this thing for me, they're yours. My gift to you."
Johnny's eyes were wide with excitement. Covertly, Jenni adjusted her position in her seat and allowed her dress to ride up showing her tanned graceful thigh leading up to her tight cotton panties in pastel pink.
Johnny took the pad and scrawled in large letters: 'D E A L!'
*******
When they were dropped off at the community college, Jenni took Johnny aside, out of view of everyone passing by.
"You know you can't tell ANYONE about this, right?" She stipulated, poking him in the chest.
"I know, I know, I'm not a fuckin' moron."
"I'm sorry, it's just... I'm already gunna be mercilessly
teased about... what happened before, you know?"
"I've already apologised for that."
She placed her hand on his chest, feeling his beating heart. They smiled at each other, a shared moment of intimacy before the day ahead they'd spend pretending to hate each other.
"Look, Jen, just remind them how much I literally detest you and your Barbie doll bimbo buddies. And that this idea of me perving you up must come from their own depraved, in-bred minds because it sure as hell ain't coming from yours or mine."
"That's actually pretty good."