For almost the next month, Tanner scoured the internet for every piece of information he could find on multiple personality disorders. There was some evidence that showed total disassociation, and some that showed shared memories. He wondered if his mother had somehow shared a memory of their night together.
There seemed to be no common thread in all the articles he read though. Very little was actually known about what he had learned was actually called Disassociated Identity Disorder. Yet, through it all, there kept coming, a nagging memory, a thought he couldn't quite put his finger on.
The symptoms and behavior seemed to fill a wide range, but there was one common thought. It was usually initiated by some kind of trauma or series of events. While his father clung to the higher sex drive, that seemed to be a bit weak to Tanner.
It was a Friday evening when his cellphone beeped and looking he saw it was from his father. His mother had been on the prowl a little over a week ago, and his father had seemed content to handle her on his own. This time, once again, they both seemed to be heading out and Tanner was being called in to help.
"Both prowling" the short text read. "Mom heading out following her"
Tanner quickly headed out and drove the short distance to his parents' house. Just as he was coming to the house he watched his sister start her car and back out of the driveway. Following her, he wondered how they both seemed to cycle through at the same time.
The thought slipped away as Myra pulled into the parking lot of a small bar. Tanner parked a few slots from her and waited. As she left her car and headed for the front door, Tanner swore she glanced back at his car, but couldn't be sure in the dark. He waited about five or ten minutes, giving her the time to find a potential target, before he stepped out of his car and headed inside.
Tanner glanced around the room not seeing his sister at any booth or table. He was tempted to roam for her, but decided to wait this time. He slid onto a bar stool and ordered a drink. The young bartender smiled at him, he cursed himself. Were it any other night he would make a move on the hot little number, but he couldn't be distracted in case Myra needed him.
"Hey stud, look who's here" a throaty voice filled his ear as he was just raising his glass for another sip.
Tanner turned and stared into his sisters' eyes, he could see raw lust smoldering in her look and it sent a shiver down his spine. His eyes drifted downward and then widened, not sure but what she wore this time put her tank and skirt from the other night to shame. The one piece dress was so short Tanner thought he could almost see her bare mound under the edge. While the top was simply a narrow band of cloth that ran up from her waist, over one breast as the cloth barely his the rock hard nipple poking against it, up around her neck, then back down over the other breast to her waist again.
"Holy fuck" Tanner couldn't help but whisper, as his vision filled with the twin globes of his sisters tits.
"You like my tits, don't you baby." His sister's throaty voice brought his eyes back up to hers.
"OH Jesus" Tanner almost moaned at the sight.
"I told you before big boy" Myra/Tyra slipped closer, her leg pressing between his thighs. "If you want something, be a man and take it baby." Her throaty voice vibrated in his mind.
Before he could second guess, Tanner reached out with both hands gripping his sisters' full tits, his fingers digging into the soft flesh as he pinched her nipples between his index finger and thumb.
"Fuck yeahhhh" Myra/Tyra moaned, shoving her chest forward into Tanner's grip.
Tanner almost gasped when his sister reached down and gripped his hardening cock through his jeans. "This gun reloaded from last time cowboy" she growled.
Using her tits he pulled his sister in closer, his face only inches from hers. His eyes bored into hers as his cock thickened in her small grip.
"Reloaded and ready to fire" Tanner grunted. "And I don't fire blanks." He said.
"Good man" Myra/Tyra breathed onto his face. She leaned in her hot breath a whisper in his ear. "First I want you to ride me like a pony, and fill my tight little ass." Tanner shuddered. "Then, when that dick is pumping into my tight cunt...I just might have a little secret for you."
"Oh fuck" Tanner groaned.
"Not yet baby, but we will." His sister patted his cock and turned away.
Tanner watched as her tight ass swayed in her dress, weaving among the tables to the back of the bar. She stopped at a small door and stared back at him, then slipped inside. The fact she knew exactly where she was going proved to tanner she had been here before. The thought flitted through his mind that she had just walked past two tables with available men, why pick him. Then, led by his throbbing cock he shoved the thought back and followed across the room to the small door.
Opening and slipping inside, he was plunged into semi darkness. He stood just inside a small storeroom, lit by a single bare bulb hanging from a chain in the ceiling. He stared as Myra/Tyra crossed the few steps to him, almost like some animal on the prowl.
"I want that fuck stick...NOW" his sister half growled. Her hand came reaching out to grip the waistband of his jeans.
Even as she slid to her knees on the dirty floor in front of him, tanner could feel her expert fingers undoing his jeans, and then jerk both his jeans and boxers to his knees.
"Oh my fucking Goddddd" Tanner moaned. His cock no more than sprang free, and his sister slammed her hot mouth down onto him. He could hear her softly gag as she buried her nose in his pubic hair.
"Mmmmmmm" his sister moaned, tasting his cock.
"OH yeah...suck it bitch", Tanner groaned as he looked down to watch his sister.
He could only watch in wonder as his sister pulled her mouth free, and then landed a wad of her own spit onto his swollen head, her hand stroking his now slick cock.
"Am I your bitch baby" she moaned up at him. "Am I your whorrmmmmmppppphhh"
Tanner reached down and curled his hands in his sisters raven hair, then jammed his hips forward, driving his cock deep into her tight throat.
"I didn't say talk" he grunted. "I said SUCK." He pumped harder...his hips beginning to fuck into her hot mouth.
Wet sucking noises filled the small room as Tanner fucked his sister wanting mouth. He could hear her gag and choke as he drove his entire length as deep as he could into her throat. Tears well in her eyes as his cock pummeled her face. At first he thought he might be hurting her, but when her hands came up to grip his ass, pulling him in even harder, he knew she loved it as much as he was.
"Oh fuck...oh shit" Tanner grunted. "Going to fucking cum" he gasped.
"NO" his sister almost screamed, as she jerked her mouth off his cock. She knelt gasping for breath as her own spit dripped off her chin to the dirty floor.
