Megan was suddenly struck with a great idea. She winked slyly at her remaining friends and shut her eyes, concentrating on her tentacle.
The girls watched dumbstruck as the tentacle retracted a little into Megans body, seeming to thicken and flatten at the same time. Megans eyes were closed in concentration but a smile graced her lips, she was obvisouly enjoying this.
Her tentacle pushed wider and wider and slowly but surely a cleft began down the back of it. It started as a small depression and grew deeper and deeper until it was nearly all the way through the thick organ. Then, slowly, the fat tip began to split in two along the cleft until the only thing holding it together was the thick slime that coated it.
Megan opened her eyes and grinned wildly at her friends as her two tentacles pulled apart, each of them clearly under Megan's complete control.
But she wasn't done yet! Both of the tentacles suddenly froze, their complete stillness unsettling after their near-constant motion before. The girls watched as slowly small ridges pushed out from the tentacles smooth hide, giving them an otherworldly look. The ridges appeared like smooth ribs running the entire length of the tentacles starting from the stubby heads and flowing all the way back to Megans cunt.
"Well girls," Megan said "Who's next? I'm 'ribbed for your pleasure' now...."