Jawn Outside of the metro Philadelphia area you don't hear it used, but it is common here. Not in Webster's Book of Words
Another one that isn't(that is in the gonna wanna league)is "onh", as in "I'm onh shoot that arrow right into the bullseye".
I'm a firm believer that whomever is running the Merriam-Webster dictionary company, is just throwing slang and made-up nonsensical words, into their "dictionary", just for sales and attention. It has gotten out of control with them, lately. .
One short phrase that is, often times, misused is "I could care less". This is used in place of "I couldn't/could not care less". I see this used by many, purported or supposed, intelligent and educated people. Please people, don't be caught throwing this phrase around, in the wrong context.
It reflects an editorial choice. There are two traditional concepts in dictionaries. One is prescriptive, and resonates with nerds like me who want an authoritative pronouncement of how words should be used. Newspapers have editorial policies on phrasing and use of language. The Merriam-Webster example is descriptive, to reflect how language is used. This is actually a good thing. I would be lost without urban and slang dictionaries as I work with a younger clientele in a library. The venerable multi-volume Oxford English Dictionary is a great tool as it comprehensively traces the use of words in the English language from centuries ago to the present age.
Guess I'm a bit of a nerd myself, then. For Christmas my congregation gave me a copy of Webster’s 1828 Dictionary...and I was excited about it! As a pastor, I appreciate it because ol' Noah W. references scripture with his definitions.
I don't care for many of these "new wave" words, but I do like that "nothingburger". with "staycation", the "fancy new wave word thinkers" were trapped. They couldn't say "vacate", because that already has a meaning.
Which is why legislated languages (French, Dutch, I'm sure others) stand out to me. For those who don't know, I mean languages that have a governing body, for lack of a better term, which decides what words are officially part of the language and which aren't. As opposed to English that just vacuums up words as they come along and/or are invented. lol Of course, even with legislated languages, you'll always have those darn kids and their slang words. “The problem with defending the purity of the English language is that English is about as pure as a cribhouse whore. We don't just borrow words; on occasion, English has pursued other languages down alleyways to beat them unconscious and rifle their pockets for new vocabulary.” ― James D. Nicoll