Oh do I! I am not yet sure if this is a primordial kink of mine (although it looks like it is). It is my favorite way of haptic sensory play. More than that, it feels primal, it feels wrong in a right way.
What is your experience like?
I experiment a lot. Never really thought about messy play in particular, it just happens. Going back well over a decade, if not more.
What are you favorite recipes?
Corn starch and water. Going from 93g per liter for a lube-like goo up to 250g per liter for more cluncky, sticky goo. Add food coloring and fragrance as desired. Mix well, bring to a boil while stirring heavily. Cool down to desired temperature and serve.
Make sure to boil very slowly or the mixture develops an unpleasant smell. If it turns brownish you did not mix well enough.
Denser mixtures eventually dry off to become flaky, leaving it on that long gives a whole new sensation
Another one of my favorites is chocolate drink powder mixed with water. Mix in slowly, you will not need much water. It is super sticky, smells nice and is nicely visible on my skink and surroundings. Irritates the eyes so be careful there.
If I am feeling really adventurous, I use flour and water. This makes for a really sticky mess, hard to clean up properly but that is what I am going for in the moment. If you are curious to try: This is very, VERY different from oil and flour - do at your own risk.
Do you have any tips or tricks for play or clean up?
Always try small-scale first. Be very careful when you use warm / hot stuff. Always mix it well and double, triple, quadruple check temperature, especially with sticky, cluncky stuff. A thermal camera has saved my skin more than once.
Tarps can be a great way to help with clean up, but ONLY if you can clean the tarp itself! Ever tried hosing down a 5x5m tarp in a small shower alcove? It's no fun.
Try not to get too excited before starting to play, and lay out all your cleanup tools inside your play area beforehand. Keep a bucket to put everything in after so you don't end up making a new mess.
What do you like most/least about this type of play?
Love: It sends me into a pleasant state that I enjoy very much, almost immediately. The anticipation is exciting as well, each time. Once I start playing I almost always go primal immediately and instead of applying the mess properly, I start tossing around wildly. This is a good thing!
Hate: It is somewhat short lived and during play I almost always experience a drop after what I feel is not too long a time. (Can be as short as 10 minutes) I do not end up hating my situation at that time, most often I find myself in a cozy position, covered in a pleasant sensation. Looking around to see the mess that happened around me asking myself "What just happened?! Did I do this?"
What turns you on about engaging this type of play?
I would not say it turns me on, erotically that is. I have played messily while I was already aroused and I have also made messes without any sexual energy whatsoever - It does not change much about the play.
I have some more questions for people to answer, which I will go first in:
How long do you usually play for, just the messy part?
10 minutes to an hour.
Do you prefer playing alone or with a partner?
Alone. I find it much easier to "modulate" the mess to my exact liking and going blank and primal with a partner is frightening to me.
When playing with a partner, do you like it asymmetrically (one gets the other messy) or symmetrically (everyone gets messy)?
Asymmetrically. I like to be the one being messed up. Preferably in restraints so I do not hurt my partner when I go primal.
Do you enjoy the mess on yourself/your partner or also on your surroundings?
So-so. I love my surroundings to get me messy, like rolling in a puddle on the floor or a mud pit. I hate when something gets dirty for no reason or purpose.
What was the biggest amount of "stuff" you played with in a single session?
About 12 liters of chunky corn starch water and I do not recall how much of chocolate drink powder. I ended up with a significant pool in the bathtub.