Dirty Burkhart
The act of consuming red dye and sticking ones finger up ones butt and squirting human feces onto the person's best friend. This having it seem like blood in the stool. The best friend sleeping due to intoxication awakes and cups their mouth around the opposing party's colon and throws up back into the butthole thus wich it came.
"I pulled a dirty Burkhart on my best friend the other day. My butthole is still sore." Did you catch them when they were asleep?