Jen was startled by her sister, who was standing only a few paces away.
“Jeez Jen, I didn’t think you were ever coming out of there...”
Jen stepped aside to let her use the bathroom, not even thinking about the two dicks resting on her lower lip.
The hall light was off, so Jess must not have seen them as she quickly pushed past and pulled the door shut behind her. Jen shrugged and went down to the living room to see if there was anything decent to watch. She held her mouth open and tilted her head forward. With each step, she felt the two dicks wobbling back and forth, like a fleshy pair of metronomes. She felt like some kind of exhibitionist, and it excited her.
Those thoughts made them begin to swell but, after she sat on the couch, her interest shifted. While she watched some re-run, the semi-hard dicks drooped back down. She let them hang on the edge of her mouth, not bothering to transform them back. It wasn't an attempt to be perverted. Rather, she had forgotten about them. Even though they were resting on her lip an held her mouth open, they felt just as natural as an ordinary tongue.
After a while, her sister joined her.
“Hey Si... HOLY CRAP!” Jess yelled.
Jen turned and said, “Whath? Whath oong?”
“Those dicks!” Jess squeaked, quickly turning away.
“Oh thit... I’m thorry,” Jen apologized as she transformed them back into a tongue.
“Wow... I knew about them, but I didn’t expect that at all...” Jess said as she slowly turned back.
“Um... Jen?”
“Can you... I mean... Um... Can I see them?”
Jen was surprised and taunted her. “You want to see your sister’s dicks?”
“Don’t get the wrong idea... I’m just... Curious... is all...” Jess added with a blush.
Jen hesitated, “Uh... I suppose... Come over here.”
Jess slowly walked over and sat next to her on the couch.
Jen stuck her tongue out, but didn’t change it just yet. She wanted Jess to see what her tongue looked like when it was "normal."
“So this is what your normal tongue looks like now?” Jess asked as she studied the strange profile and cleft.
Jen pulled it back in and said, “Yep... Kind of weird looking, but feels the same... Unless I’m aroused, then it gets sensitive.”
“And you can change it at will...” Jess added.
“Yea... Thanks for that...” Jen replied.
“Can you change it now?” Jess asked.
Jen didn’t answer, instead she allowed her tongue to stretch out of her mouth, split, then take on the unusual form of twin cocks that she enjoyed less than an hour prior.
Jess just stared at the flaccid pair for a moment, then simply said, “Wow... They’re the real deal...”
Jen felt a little horny from showing them off and they began to harden. Jess’s eyes went wide as she watched the two dicks gently rise upward, occasionally twitching.
With her mouth full, Jen lisped, “Eveythinn worthss thoo...”
“Everything works?” Jess repeated.
Jen commanded her dicks to turn back into her tongue, then bragged, “Yea... They are super sensitive around the tips and can even cum.”
“That’s so weird...” Jess said.
"Does that mean you're a boy now?"
"Jen didn't like the accusation and shot back, "No... Mom's got four boobs, does that make her a cow?"
Jess turned red and mumbled, "I guess not..."
Jen grinned when she saw how embarrassed her sister was. She decided to mess with her a little more. With a grin, she stuck out her tongue. After a moment the dicks reformed, this time skipping the flaccid stage.
Jen expected her sister to turn away in disgust. Instead she stared at her phallic tongues and stuttered, “Can... Can I touch them?”
Jen looked at her for a moment, not sure what to say. Her sister’s eyes didn’t move from the two cocks. It was almost like she was hypnotized.
Jen threw caution to the wind and shrugged, “Thure...”
Jess reached up with one hand and poked at the left dick. Jen felt her finger and involuntarily flexed the muscles on that side. It twitched and Jess quickly pulled her hand away. A small smile crept onto her face as she reached up and grabbed both cocks with either hand.
“They’re so warm!” Jess giggled. “I think I feel your heart beat...”
Jen enjoyed the feeling of Jess’s hands on either shaft, but felt guilty since it was her sister. Jess began to move her hands up and down just as their parents walked into the room...