Jason Hazeley and Joel Morris are two of Britain's busiest comedy writers (Philomena Cunk, Charlie Brooker’s Wipe, Mitchell & Webb, Angstrom, Agendum, the Paddington films and the best-selling Ladybird Books For Grown-Ups). They also host the hit podcast Rule of Three about the craft of comedy, and here they bring that same forensic blend of analysis and giggling to the subject of short jokes. How much can you do with a one liner? How quickly can you get a laugh? How do snappy gags work? And is Viz better than Hemingway?