This malaphor was heard on the local Pittsburgh PBS show, “On Essential Pittsburgh”. It is a mash up of “at the drop of a hat” (immediately) and “(so quiet that) you could hear a pin drop” (extremely quiet). Drop is the shared word and the probably cause of the confusion. Kudos to Sally Adler for hearing this one and sending it in!
This wonderful congruent conflation is a mash up of “at the drop of a hat” and “stop on a dime”, both meaning an action done instantly. Drop and stop are four letter words that rhyme, adding to the befuddlement. This beauty was heard at a court hearing. Kudos to Sam Edelmann for sending this one into Malaphor central!