The Shadow Out of Blackmarsh
The movement caused the tentacles at his loins to shift, and felt the now-familiar undulations of the oni demanding tribute.
Brothers in Arms
At the same time a grasping mouth squeezed and undulated around his exposed penis. his knot grew as his shaft lengthened and thickened inside the maw of the tentacle.
Love Of The Pack (The "Lost" Chapter)
His eyes wide with anticipation, stripe reared up, clasped his partner securely with his muscular forearms and began to slowly undulate his hips.
The Hive Ship
He threw himself down, trying to roll away as the undulating mass opened at its blunt tip into a gooey spreading orifice, darting in and engulfing his legs.
Farmer Hank Milks Himself A Good Time ch. 1
The contractions eventually melded into one continuous undulation of muscle. and before hank knew what was going on, the undulation started to gain strength. it felt as though his arm was being pulled, lightly at first.
The Serpent of Altair Lake
With each undulation of altair's coils, the serpent was pressing his cock up against his lover's prostate.
Serving Her Ladyship
Sensing his nearing release, the lamia began undulating her lower body and tail to meet with the stallion's thrusts.
The Docks
They both shivered and moved in encouragement, their warm bodies undulating slowly in place.
A Homecoming Surprise
After a few more undulating movements of her tongue she let his shaft out with an audible "_pop_" and began to rapidly work him with her right hand.
The Snake Pool
The wolfdog moved his paws along the undulating curves of the ballsack, trying to figure out which way the fox was positioned inside.
Despoiling the Dragoness
Clutching at the invader inside her, vainly trying to milk the oral organ as it undulated and stimulated her untried insides more. she gushed into his mouth, coating his muzzle in her cum.
Chocolate Surprise
I could feel its chocolate surface shifting and undulating against me. “no, please don't!" i begged.