The plural form of that word is not only incorrect. It does not actually even exist in the English language. Use of it among its first language people red-flags them as either very young or not so very educated, or possibly just hampered by proper word usage.
Bill Burr uses the plural form of the word often, but it works for him and his popular everyman identity. Likewise, its purposeful use in fiction can serve as an easy way to identify an English-speaking character's education level without throwing more obvious clues into the reader's face. They decipher this clue for themselves.
Other clues to these traits include the use of apostrophe-S ('s) to denote a plural meaning (when the meaning of inserting an apostrophe before the S actually means ownership).
Another one is the confusion between Their, They're, There. All these words sound the same. For the awkward first-language English speaker, it is usually "Their" which seems to mistakenly replace the other two most often. Again, this may indicate youth, lack of education, or simply a form of disability among some who are otherwise often quite brilliant.