(Vocabulary postings are words or phrases I recently came across in reading, did not fully understand, looked up, and discovered something new.)
This is an unusual word, and you will probably have to add it to your spell-checker. The only reason I know it is that it was recently sent to me by a friend. Paraprosdokians are sentences in which the latter part or a following sentence has an unexpected, humorous twist.
Winston Churchill loved them. So do I.
It is easier understood by example. One is: If I agreed with you, we’d both be wrong. A Google search of paraprosdokians will uncover many more.