A futa uses your ass

You hear an appreciative whistle from behind as two soft hands spread apart your cheeks.

"Mmmm, Sheila's outdone herself this time." A feminine voice purrs behind you hungrily.

You feel her spit on your asshole before working it deep inside of you with two probing fingers. 'Well, that's considerate.' You think to yourself, trying to stay positive as her digits lube up your insides.

You feel two hands grasp firmly at your sides. 'I guess that means...' you gasp as you feel a pressure against your sphincter before it pops open and something very large and warm slides on in.

Just when you think that you've never felt so full, it starts to move. Slowly at first, but more aggressively with every passing thrust. It hurts at first but after a while you can't help but moan in shame as the large invader batters against your prostate over and over again, causing your limp dick to dribble out it's clear precum onto the warehouse floor.

'Ugh, ugh, ugh...' You softly punctuate in time with the girls hips slapping against your ass.

The draft of the warehouse and the ache of being held in place buy the grip of the pillory reminds you of your embarrassing position and you start to be a bit more of an active participant, pushing back against the anonymous futa's thrusts, trying to speed things along as much as possible.

Your plan quickly backfires however as the added stimulation proves to be too much for you, causing you to groan even more pathetically and writhe about in your bonds. Before you can help it, your swaying cock erupts, splattering against your knees and feet.

The futa behind you laughs at your loss of control and drills you even harder. It's not long until you feel her cum gush inside of you, adding pressure with every spurt. The uncomfortable pressure does not last long though as the futa pulls out of you like the stopper in a bottle, causing a river of cum to ooze out of your gaped hole before running down your thighs.

"Thanks doll." The apparently satisfied futa sailor slaps your ass and you hear her whistle off into the distance.