1 general:: Phrase(s): dish the dirt Sl. to spread gossip; to gossip. • Let’s sit down, have a drink, and dish the dirt. • David goes down to the tavern to dish the dirt.
McGrawhill's American Idioms And Phrasal Verbs
2 general:: Spread gossip or scandal, as in Sally was notorious for dishing the dirt. [Slang; 1920s]
American Heritage Idioms