Various experiments with mud and quicksand, successful and not very successful. ;-)
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Angel A in Beach Sand Trap
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Lucy Kitty in Black Tar
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Lucy Kitty in Beach Sand Trap
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Tiny Soya in Black Tar
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Luna Lee in Beach Sand Trap
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Luna Lee in Black Tar
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Best of QS4Ever Laboratory 2023
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Angel in Black Grainy Quicksand
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Environmental Pollution: Mary
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Mary Orchid in Black Grainy Quicksand
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1/6/24
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Environmental Pollution: Tiny
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12/10/23
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Tiny Soya in Black Grainy Quicksand
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10/7/23
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Bestselling scenes over the past week
Experiment #1: Mudough
Added 6/20/18    20793 views
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This video shows a pit test with a new experimental substance. We made the dark mud viscous, like a dough. This mud thickly adheres to the skin. Every movement Tiny is given with difficulty. She is stuck in a heavy mud slurry and moves erotically, t...
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Experiment #2: Mudcano
Added 7/11/19    20154 views    6
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We ourselves do not fully understand what we wanted to do initially. xD But in the end it turned out something funny and sexy. So what do we have? Mary is wearing a dark green dress, long black gloves and looks like a gothic girl. Soon she will tak...
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Experiment #2.1: Failed Mudcano
Added 1/26/23    6931 views
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In addition to the usual quicksand scenes you see in our main store, there are many video files that we have rejected due to various failures. These are mud experiments that were not released because our team was not satisfied with the results. But d...
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Hidden Trap #2
Added 8/4/23    9240 views    3
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Yes, it's like Hidden Trap 1, same model, same pit, but a few days later. We tried to improve this mud pit, but it didn't get better, so we just shot this video as it is, one more time. The main difference from the previous scene is that Tiny exposes...
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Hidden Trap #1
Added 2/10/23    8866 views
19
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Well, we can not say that this experiment was completely unsuccessful. But it was still not what we expected, so this 2020 video was not released for a long time. We made this mud pit almost invisible so that inattentive girls fall into this trap. B...
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2 files
Experiment #3: Quick-sand
Added 4/21/23    10264 views
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We made this experiment in 2017, and as it often happens, we were not satisfied with the result. We used styrofoam to float the sand, but the sand seeped through the styrofoam, white styrofoam balls appeared on the surface and ruined the look. Howeve...
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Another Clay Pit with Tiny Soya
Added 5/19/23    6166 views
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Tiny explores the depth of another clay pit. She is wearing a yellow dress with blue flowers. Clay mud looks thick and hard at first, but becomes thinner and more watery over time. After floundering in this quicksand for quite some time, Tiny sinks u...
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Testing Clay Pit: Lucy
Added 4/8/23    4720 views
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Several of our experiments were devoted to clay, its viscosity and consistency. In this video, Lucy gets stuck in clay and resists sinking (actually trying to sink as deep as she can). This mud has the color and texture of natural clay, but is notice...
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Testing Clay Pit: Tiny
Added 3/10/23    6941 views    1
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Tiny Soya wanders through the swamp, stepping on thick green grass, until she finds a place where there is a lot of deep natural clay. Then Tiny gets stuck in clay and resists sinking (actually trying to sink as deep as she can). After floundering in...
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Testing Clay Pit: Angel
Added 2/24/23    7749 views
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Several of our experiments were devoted to clay, its viscosity and consistency. In this video, Angel gets stuck in clay and resists sinking (actually trying to sink as deep as she can). This mud has the color and texture of natural clay, but is notic...
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Environmental Pollution: Angel
Added 9/23/23    10557 views
27
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While walking through a wooded area, Angel came across a strange place. In front of her was a puddle of jelly-like acid-green liquid. That liquid made quiet gurgling sounds. There was a pipe nearby, apparently this green slime flowed out of it. Out...
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Enjoying Pink Slime (Mary Orchid)
Added 12/15/16    4917 views    1
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It is winter and it's cold outside. Mary was bored, she wants messy adventures! This time she cooked fragrant strawberry jelly. See how Mary daubed pink slime! She was stripped naked and stroking slippery breasts and thighs. Mary's hands massagi...
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Scene reviews
Sent by real customers
Luna Lee's tar trap
Way better than the La Brea tar pit, this messy trap captures Luna Lee. She pants hard, as she struggles to get out, but the thick black slime is too much for her. The bonus footage shows her submerging in the filth again and again.

Pace yourself, while watching this one, folks!
-deadpool    29 days ago    
Yes yes yes!
Please please please put others in this pit. Absolute hottest thing I've ever seen. Lucy is amazing.
-wamlover19    2/3/25    
Awesome scene with a fantastic new quicksand pit
QS4EVER Laboratory really live up to their name with exciting new ideas and lots of variety in both their use of many different types of pits and models. This latest "black grainy quicksand" is already one of my all-time favourites (and I've been into quicksand content since the 90s). It just ticks so many boxes for me, it's getting very close to my ideal kind of quicksand pit. Amazing scene and Tiny is great as always.
-morb    10/8/23    
Honestly one of the best Qs / messy videos I've seen.
The beginning is the best part, She steps on what looks like dry soil, falls straight through the surface into a muddy pit up to her neck. The mud looks great, almost like oil or tar. She writhes around for about five minutes before going under. Personally i liked the contrast between her perfect milky skin and the very dark mud.

Tiny looked beautiful as always but the mud pit was spot-on.
-chris494    3/26/23    
Great outfit for the thick gooey clay
So hot, love how the sweater wraps her body as she sinks and gets covered in the heavy thick mud. the way she slowly sinks up to her shoulders is sexy and satisfying, the outfit looks perfectly casual making it feel very real and I'd say this is one of the best.
-TheLavaQueen    3/10/23    
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