This is a substance that steps over some lines so I thought a bit of explanation might be in order. Obviously you can tell that it's a variation on the traditional "oobleck" or corn starch and water mixture. Over the years it's been used in Brazilian game shows and demonstrations of non-newtonian fluids but never quite like this. At least as far I'm aware. MPVBleck is a proprietary variation on oobleck for reasons of color, preparation, durability, etc . It reacts with the same force as is applied to it so you can pound it with your fist and not make a dent but step on it slowly and it will engulf your foot. We've had Summer jump rope on it and then be unable to extricate herself from the stuff. We've struggled to classify it as WAM type material for coverage or "Quicksand" for the way it engulfs and resists escape. The effect is real and no matter how watery it might appear it's damn difficult to get away from the stuff. MPV is gradually rotating scenes with it from Club MPV and deepest scenes are beginning to show up here at UMD on both MPV and QSV sides of the house. Photos don't really do it full justice so make sure you see the previews where they are available on some scenes. We'll be the first to admit that classifying this stuff is kind of a challenge. Please, please, please feel free to ask any questions. Here's a good example with "Star's Introduction to MPVBleck" on the Quicksandvisuals side of the house - Watch the preview -

https://quicksandvisuals.umd.net/download_info/stars-introduction-to-deep-mpvbleck

It's WAMbrosia is what it is!

Who cares about classification! Messy substance, hot girls and great images as usual! Me likey!

PS - All things considered,though - it does seem to be a bit more 'quicksand-ish' to me. Seems like that is more about restraint, sinking, unable to get out, etc - which is what this stuff seems to do. WAM seems to be a bit more about slipping, sliding around, wrestling, coverage, etc. But feel free to prove me wrong with more pics and vids!

One of the great things about it is it's easy to wash off. Dissolves quickly in a warm shower.

Agreed but here we get into the ever changing precise definition of WAM. It does provide some awesome coverage effects. And if you're the least bit interested in bondage/sticky/stuck kind of stuff it's in a class by itself. We have a difficult time figuring out what to call it.

Hi
which scene is that first gif from?
looks amazing

That's "Summer, Mighty Wet Aphrodite in Brown MPVBleck" - It's currently available for purchase by members at Club MPV. It's probably over a year from making it to UMD but is scheduled for release on the "A Deep Mess #5" DVD sometime this year but I don't have a date.

Here's a link to the preview - http://www.mpvstuff.com/trailers/mpvsummeraphroditeinbrownmpvbleckdvtrailer.mp4

And yeah, Summer actually loves this stuff. She found this blue thing we bought and wanted to hit the shower before going in to the 'bleck. Thought it would look better that way. How do you argue with that?