Here are some possibilities for what you might be thinking of:
* Slang analogy: This could be a combination of "slang" and "analogy." An analogy is a comparison between two things, so a "slang analogy" might be a comparison of slang words or phrases to their formal equivalents. For example, "kick the bucket" is slang for "die," so a slang analogy might be comparing "kick the bucket" to "pass away."
* Slang analogy: It could also refer to using slang in an analogy, for example, "She's as quiet as a mouse," where "quiet" is being compared to a mouse using the slang phrase "quiet as a mouse."
* Slang analogy: It might also be referring to a situation where someone uses slang that is not appropriate in the context, creating a humorous or awkward situation. For example, if someone uses slang to explain a complex scientific concept, that could be considered a "slang analogy" gone wrong.
Without more context, it's difficult to definitively understand what "slanganalogy" means.
If you can provide more information about where you encountered this term or what context it was used in, I might be able to give a more specific answer.