I just pitched another book over the phone. Admittedly in this case they came to me. A history of a discrete planned beachside suburb of the 1920s. But I already have a bunch of unwritten books hanging around me and they are starting to stink. Then I sat down and wrote out my pitch and probably radically underestimated how long it would take. So I added a month. It still didn't seem enough. So I wrote this is not an official quote and put it in italics and put an exclamation mark at the end and it seemed authoritative enough.
Oh for the olden days when people just wrote books all the time and no-one said, you know publishing is in decline with parrallel importing and nobody reads from pages anymore. Instead they said like your book is the talk of the town and everyone thinks you're wondrous. I miss the 90s.