What is the longest slang word?

There is no definitive answer to what the "longest slang word" is, as slang is constantly evolving and varies widely depending on region, subculture, and time period.

Here's why it's tricky to determine:

* Slang is constantly changing: New words and phrases are coined all the time, so the longest one could be a recent invention.

* Slang is informal: There aren't official dictionaries for slang, so there's no central authority to define or record length.

* "Word" is ambiguous: Is it a single word, a phrase, or a sentence-like expression that counts as slang?

Some contenders for the longest slang term might include:

* "What the what" (though this is a phrase rather than a single word)

* "I'm not even going to go there" (again, a phrase)

* "You know what I'm sayin'?" (another phrase)

Ultimately, the "longest slang word" is a bit of a subjective and shifting concept.