This beauty comes from a Trump tweet. Concerning a possible military strike against Iran, Trump tweeted, “We were cocked & loaded to retaliate last night on 3 different sights when I asked, how many will die.” This is a mashup of “locked and loaded” (a command to prepare for battle) and “to go off half-cocked” (to take a premature or ill-considered action). Many news sites picked up on the malaphor, including Reuters, calling it a malaprop. https://www.reuters.com/article/us-usa-trump-malaprop/trumps-half-cocked-and-loaded-tweet-draws-barrage-of-reaction-idUSKCN1TM2I0
We of course know it is not a malaprop (improper use of a word) but rather a malaphor (unintentional blend of two or more idioms). A few loyal followers, including Ron MacDonald and Frank King, spotted this one. Thanks Ron and Frank!