What is another word for most knee slapper?
Pronunciation: [mˈə͡ʊst nˈiː slˈapə] (IPA) 
If you are searching for some hilarious phrases to describe an unusually and excessively amusing situation, here are some synonyms for "most knee slapper" that you can use with great ease and satisfaction. Some of the examples of such phrases include; "most rib-tickling," "funniest thing ever," "uproarious," "gut-busting," "sidesplitting," "hysterical," "rollicking," "laugh-inducing," "riotous," and "belly-laughing" moments that can leave you doubled over with laughter. These are just a few of the many phrases you can use to describe a knee-slapping funny situation with utter perfection. Ultimately, the perfect synonym is the one that truly captures the essence of the moment, expresses the level of humor, and resonates with your audience.
