When someone is having anal intercourse and pieces of fecal matter become present in the male organ's urethra. When the man ejaculates the cum is a brownish sludge, and this is the dick-shit.
When Ben was nailing Courtney in her butt last night, he ended up with poop in his penis and when he came he dick-shitted all over her mouth.
When having anal sex, the feces enter through the urethra and it comes out like a play-dough machine. The noodle-like object can then be used as a meal or as a toy.
After Wyatt pulled outlast night, shit came out of his dick and it looked like a ramen noodle. He said he was sorry for the dick shit.