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1.
Affirmative response to a question implying that the “yes” answer was more or less obvious or just a simple “Sure it’s going to happen, what else would you expect?” Navy slang from the 1950s referring to the “dress blue” flat had enlisted sailors wore at that time.

“You going out drinking tonight, Richie? “ “I hope to shit in your flat hat, I am”
by Tony Duhamel October 29, 2007

Words related to hope to shit in your flat hat

ant no way certainly sure yes you bet