I try not to write lyrics using the slang and vernacular as it tends to become "dated" rather quickly. Also, slang terms can be rather localized in some cases so again, a good reason not the use them writing.

That's my personal preference. I seem to recall quite a few songs that did use such things.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.