grody would meangross/dirty like an emaceated donkey's hindparts. some people have grody minds and speak of farting into a girls mouth when she is sexing you with her tounge. ewww!
"You are soooo grody like an emaceated donkeys hindparts, Jody!!"*
*note- not referring to any specific Jody- it just rhymes. Jeezus you take things with such offense!