Back in the Middle Ages, impoverished townsfolk; whom the King had absolutely no interest nor sympathy for, would have to survive by eating dung and dung only because of their lack of monies. Hence the name "Shit-Munchers".
Royal Advisor - "Oh Almighty King, what shalt we do about thy lack of monies?"
One who munches on shit, takes the bullshit instead of thinking for them selves. Lives and dies by imaginary rules, who live in fear of their higher ups.
Toms such a shit muncher he told that guy wait on like even though their is no line.
When your dad comes home from a long day of work at Bosch on a Saturday and had a couple beers and wants some of that nice tight hairy asshole that you've been hiding in your pants.
"Son bring over that fuzzy shit munchkin so daddy can have himself a good time." -Dad
One who walks around without underwear on and get's an angry red waffle like pattern on their vagina, has a urine and shit fetish, and is either a lesbian or an extremely horny man. (Cunt Munching)