While he had been watching TV, Jim had been turning over things that seemed strange in his mind. The unused looking bathroom in his room was the most titillating. The only explanation, beyond his sister scrubbing the inside of the medicine cabinet clean, was that the bathroom really was unused. That would mean that his sister used Julie's bathroom which would let one imagine that maybe his sister also stayed in Julie's room even before he'd come to visit.
And maybe they did more than sleep in that bed!
As quietly as he could, he pressed his ear against the door. The sounds got clearer but they didn't sound like words. In fact, he thought they sounded like moans!
'God dammit!' Jim thought as he continued to listen. 'I bet Julie turned Beth into a fuckin' lesbo!'
The thought of Julie eating out his sister or Beth sucking on Julie's melon-like knockers made Jim hornier than he'd already been. Still, he'd like to be sure. He didn't want to try the door; the light on in the livingroom would give him away and he remembered that the bed was situated so that he'd have to stick his whole head in to peek around the door. That was a definite no go.
'Maybe there's a skylight,' Jim thought. He hadn't noticed before but the other bedroom had one. Jim quietly walked through the livingroom, turning off the lamp by the couch as he went. He went up the couple of stairs to the dining area and opened the sliding door onto the balcony. A quick look either way and he found what he was looking for.
There was an access ladder that ran to the roof; the building's owner had enclosed the front surface of the ladder in a locked metal box to keep tenants off the roof. Still, it won't offer much of a barrier to Jim. He moved to it and gripped the outside of the ladder as high up as he could. He brought his feet up and pushed them against the side of the ladder box. He pushed his body up, reached higher on the ladder, brought his feet up again. Like a mountain climber, he shimmied the metal column until he could pull himself onto the roof.
Sure enough there was a skylight over Julie's bedroom. Jim cautiously moved over to it, hoping that his movement would not be heard below. Finally reaching his goal, he looked down into the bedroom.
The bedroom was not entirely dark. Candles were burning on both of the bedside tables and their flickering light let Jim see all he wanted.
And what he saw made him suck in his breath. Elizabeth was spreadeagled on the bed with tall Julie practically covering her from his sight. All he could see of his sister were her face, arms and legs. Julie was naked except for a thong; he could see a large band around her waist and one connecting with it that disappeared in her asscheeks. Julie was kissing Elizabeth's neck and her right hand was between their bodies, down low near Elizabeth's crotch.
'Jesus…I knew it! I knew it!' Jim thought as he broke out in a big grin. Jim's eyes drank in the back of Julie's superb body. Long, powerful legs… round, firm ass….a strong back that looked almost etched; she had the body of one of those bodybuilding magazine covergirls. Julie shifted her body to the side for a second and Jim caught a glimpse of the outside swell of one of her huge knockers as it mashed against his sister's torso.
'Those got to be fakes,' Jim swore. 'God couldn't make a rounder pair than those.'
As he watched Julie's hand moved out to support herself and the stacked brunette began moving her hips, grinding herself against his sister's crotch. Well, actually she looked like she was fucking his sister. Then it hit him — Julie was probably wearing a strap-on dildo; that made more sense than a g-string. He'd seen some girls using one in a stag film for the older brother of his best friend before he got married.
Seeing them go at it down below was way hotter than the film had been. Jim's dick grew into a raging hard-on as he watched the wild scene. He unsnapped his jeans and pulled the zipper down. He hurriedly tugged down his underwear and his dick sprang out in the humid city air. He began stroking it as he looked down through the skylight.
Julie had raised herself up so her arms were straightened, her hands planted on either side of his sister's head. She rammed her hips down against Beth and his sister jerked her arms, her hands drew up sharply, like a puppets on a string. The peculiar motion made Jim squint and then he saw something he hadn't noticed before.
Elizabeth's wrists were tied to the headposts of the bed! Not by handcuffs but by some thin straps. He couldn't see in the feeble light at the foot of the bed but he bet her ankles were secured as well.
"Jeeeessssuusssss!" Jim exclaimed and he immediately let go of his dick. He wanted to last long enough to watch the girls finish. He rolled over on his back and looked up at the sky to let himself cool down a little. Beth and Julie were really into some kinky things — bondage, lesbianism…damn, he'd fallen into a erotic wonderland.
How did his sweet, innocent sister get into this swinging lifestyle? He bet Julie seduced her — just like in the movies. Maybe Julie could tell his sister might go for it, talked to her at the gym, found out she was unhappy in her relationship with that guy, took her under her wing. Then takes her to bed and shows her how the other half swings.
Unable to resist for very long, he rolled back over and looked down again at the hot scene below. Julie was still laying it to Beth, driving her voluptuous hips hard between Elizabeth's splayed legs as she kissed his sister's neck. Up on the roof, he couldn't hear his sister's moans, all he could hear was traffic, but her mouth was open and it looked like she was really enjoying the screwing her roommate was giving her. 'I'd like to tie Julie down like that,' Jim fantasized, 'Ride her hot body and fuck her pussy. Wonder if she goes for men? Hell, it wouldn't fucking matter if I had her tied down! Yessir, give her a taste of her own medicine.'
The more he watched the lesbian lovers go at it, the more his attentions shifted to his sister. Her body had blossomed since she'd left home. He knew he shouldn't be thinking about his sister but there she was, naked under her humping roommate. Elizabeth had great looking legs; that was all he could see at the time being but his mind could fill in the rest. Slender ass, flat tummy, pouty little titties….real nice. Down below, Julie had fallen on top of Elizabeth and was gripping his sister's ass as she tried to drive her head into the headboard. He wondered how it felt to grip Beth's ass like that, to lay on her soft body. He let himself go there.
Jim's hand began to fly up and down his turgid cock, unable to hold back any longer. In his mind, it wasn't his hand, it was the hot lining of his big sister's pussy! He was fucking the shit out of Beth and she was begging for him to fill her with his jizz.
'Oh god! Come in me, Jim, come in me! I want it! Julie can't do it…give it do me! Shoot me full of cum!'
"Awwww, shit!" Jim groaned in real life as his nuts tightened and then shot his load. The first shot arced up and landed with wet splat in the middle of the skylight. Jim turned his body so the rest fell along the edge of the skylight. Finally the torrent ebbed and he shook the dregs off onto the roof before pulling his underwear and jeans back up.
He looked down through the skylight again to find that Julie was still now and Elizabeth had her eyes closed, looking very sated. Jim had planned to stay around and get a better look at Julie's outrageous body but he felt sorta bad about thinking about his sister like that.
'I got another five nights…I'll get a good look at Julie before I leave,' he schemed as he carefully made his way back over to the ladder.
Chapter 3
Jim woke up the next morning around 9 A.M. with a boner and the fragments of a dream. He couldn't remember any details but he was pretty sure Julie was in it.
He got out of bed, showered and went out into the livingroom. No one else appeared to be up, so he went into the kitchen and poured a bowl of cereal as Beth had suggested. He went out on the balcony and ate it at the patio table, enjoying the sun. It felt like it was already 70 degrees out.