Shitlicious: something that tastes so nasty, it tastes like shit (which I hope no one actually KNOWS what shit tastes like except if you eat something shitlicious)
Mmm...That Jimmy Dean sausage I found floating in the toilet was shitlicious!
Used to describe food of unknown or poor quality, which are delicious.
Foods from McDonald's, Gas Stations, and places of the like, which you know are gross, yet still taste amazing.
Nat: What is that, it looks like it tastes like crap!
Clint: I know, I got it at the gas station, its shitlicious though!