The word "coomer" is a slang term that has recently gained notoriety on the internet. The spelling of this word is somewhat unusual, as it does not follow the regular English spelling rules. The correct pronunciation would be '/kuːmər/', with the stress on the first syllable. The word is often used as an insult to describe someone who is deemed to be sexually frustrated and socially awkward. It is not a commonly used term, and it is often regarded as offensive or derogatory.
The term "coomer" is believed to have originated from the online imageboard 4chan in the mid-2010s. It is often used as an insult to describe a man who is perceived as overly obsessed with internet pornography or excessive masturbation. The exact etymology of the word is not well-documented, but it is thought to have been derived from the word "cum" (referring to ejaculation) and may have been influenced by the word "doomer" (a term used to describe a person who has a pessimistic worldview), as both terms gained popularity on 4chan around the same time. However, it is important to note that the term "coomer" is highly derogatory and offensive, and its usage is generally discouraged.