Best definition
Worms in Dirt
1) A tasty dessert treat consisting of chocolate pudding, crushed chocolate cookies (or pie crust) with half buried gummy worms.
2)

The act of inserting a half-erect penis partways into a shitty anus.

“What are we having for dessert?”

“Worms in dirt.”

“Awesome! What are we going to do after dessert?”

“Worms in dirt.”