1. When a person (male or female) opens up a another females vagina and deficates a log into her vagina, then proceeds to watch her birth out the log of feces / 2. The log of feces that is pushed out of the females vagina.
1. I just totally gave that whore a dirty munchkin!
2. Wow, that is a huge dirty munchkin!
A dirty munchkin is when an individual is on his or her knees performing oral sex and the recipient blows their hot, sticky, wetload all over the performer therefore making them a "dirty munchkin".