I know that, of the few people who watch me fore whatever reason, you have a universal love for messy stuff. I recently stumbled across a messy game in a YouTube video that I don't think I've ever seen anywhere else:

https://www.youtube.com/watch?v=iJ9wJrGIz3g

Just in case the video gets taken down at some point for any reason, I will summarize. The game is called Slap Cream. One player takes a can of Reddi-whip and sprays it on the back of their hand. Then they slap their forearm while raising it sharply. If done right, it should launch the whipped cream in the air. If playing alone, the player must then catch the whipped cream in his mouth. If playing with another person, they must catch the whipped cream in their mouth.

Admittedly, it's not a very elaborate game, but it's a bit of fun. It's like a low cost version of the game they used to do on Double dare where players launched pies from catapults and had to catch them using a pair of clown pants.

As a side note, it does seem to have to be whipped cream or something similarly light. I happened to have some pudding around and thought that Slap Pudding sounded like fun. Turns out that it was just too heavy to work.