– Manuscript – Welcome to English in a Minute! To knock someone out in the sport of boxing, you must hit the other boxer really hard. So, does knock yourself out mean you hit yourself? Knock Yourself Out Speaker A: Another invitation to the Grand Fan Band Jam.Speaker B: What?! I have been waiting to see that band for years, Dan!Speaker A: Here, take my … [Read more...] about Knock Yourself Out (Idioms)