He seems to have written his memoirs mainly so that he can 'dish the dirt' on all his former lovers.
The police 'struck pay dirt' when a witness came forward with new information.
The band 'hit pay dirt' [=had a big success] with their first single.
(..) I don't ask for specifics. That's why they're called Black Ops. And why we all sleep better at night. Check. That is great. So, um... Any dirt on that? Uh, how, uh, that's going? Outstanding. Great. Oh, great. I was hoping to hear that. The President will be pleased. (..)2014 Transformers: Age of Extinction