My colleague would open one of Derrida's works to a random page, pick a random sentence, write it down, and then (above or below it) write a variant in which positive and negative were interchanged, or a word or phrase was replaced with one of opposite meaning. He would then challenge the assembled Derrida partisans to guess which was the original and which was the variant.
Надо будет попробовать.
(пример - на основе целого абзаца даже, а не одного предложения - есть ниже в той же записи)