"RAS syndrome stands for redundant acronym syndrome syndrome and refers to the redundant use of one or more of the words that make up an acronym or initialism with the abbreviation itself, thus in effect repeating one or more words. Usage commentators consider such redundant acronyms poor style and an error to be avoided in writing, though they are common in speech. The term “RAS syndrome” is itself a redundant acronym, and thus is an example of self-referential humor."