Up... and down.  Up... and down.

Kieri sighed.  "Sis, you've got to stop doing that, it's annoying."

"Well what else am I supposed to do?  I'm bored out of my mind!"  Nonetheless, Lorea reluctantly squished hir ball back into hir side, where shi'd pulled it from.  

The two hadn't done anything all week; they were off work while the shop got renovated, and they weren't used to such an upset in their schedule.  They'd resorted to sitting around and molding themselves into new shapes purely out of boredom.  Well, Lorea had, at least.  At the moment shi was idly kneading between their necks.

Struck with an idea, shi started pulling out a lump from there, pushing their heads aside to make room for what shi was forming.  "You did that yesterday, Lo," Kieri yawned.  

"If you'd pay attention, that was you who did that, and it's not even a cock this time," shi replied matter-of-factly, not even looking up, so to speak, from hir sculpture.  It slowly began to take form, a knob becoming a muzzle, slice it -here- for a mouth, shape the eyes carefully like so...  And in minutes the twins had a third head.

"Another -head-?  So now we're -three- people who have to share a body?"

Lorea giggled.  "Nope!  I don't think we even could do that.  It's just like another limb--" "Either of us can control it as we want!"

Kieri grinned deviously.  "Oh, we're gonna have -fun- with this."