One of my favorite messy things to do is to do it "secretly" for hours. This involves knicker/ underwear filling with multiple layers of clothing. Just curious if anyone else does this too.
Male 29 for context.

After doing this over the past few years I have found a really good way to hold mess in without leaking at all!

I usually use the following clothing in order:
Food themed boxer briefs.
I found some that are compression style with long legs that roll up nicely helping hold everything in.
PVC shorts.
I found a pair that don't have any zippers to help hold leaks. I went a size down that what I normally do with these ones. rolling the legs up again
PVC catsuit/ leotard.
One with short legs and short selves. rolling the legs up on these as well.
Incontinence/period underwear.
I currently have period underwear to absorb anything that has leaked past. I want to get some
incontinence underwear with absorbency pads that go all the way to the waist band.
leggings/ compression pants.
Shirt and Jeans or a hoodie (If I need to be secret)

I get messy like this for hours with no issues of leaks. I usually continue to add items in after I complete a task or a certain time limit.

My favorite substances are currently brownie/cake mix (I mix with just water) and frozen sticks of unsalted butter.
I am messy while writing this wearing the items above. I currently have the following in my pants:
2 boxes brownie mix
1 box chocolate cake mix
1 box yellow cake mix
1 box red velvet cake mix
4 sticks of butter.
I usually do frozen butter and mix the mixes with warm water. as the butter melts over time the consistency becomes super thick and creamy. it really holds together without worrying about leaks. I started with 1 box of; brownie, chocolate cake, yellow cake and 2 sticks of butter. after about 1.5hrs I added the rest. I am now 4hrs into this mess and loving it. I love getting up and walking around. pushing my crotch against the back of the couch pushing the mess to my back. and then sitting back down feeling the mess move up.

My messy sessions usually range from 4-9 hours. I often like to go out in public like this, its super thrilling and I know I'm covered enough that no one would notice or be uncomfortable.

Is anyone else like this? I'd love to hear how you do something similar below. I'm open to answer questions you might have too.