Okay, I'd like to tell you guys a story about how mud and quicksand fetish came to light...
Okay, so like, at a young age of 6 or 7, I used to always fantasize about adventures I had, one of them being me navigating a jungle where the ground is 95% quicksand, mud, or tar while going to retrieve a sacred artifact hidden in a temple somewhere within the deathtrap of a place, but being daring adventurer I was, I overcame all odds like a young Indiana Jones! Of course, come the age of 13, what with puberty and hormones becoming a factor, they obviously became more sexual.