That sounds like and adverb. In this case SWA describes how he went.
Clearly, as a locally created piece of speech, this has developed a versatility that will only be restricted by the methods of common usage.
The F word functions in the same manner. It can be all forms of speech.
All we need to be clear on is "what" the use of swa ultimately indicates.
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poopity, poopity pants.
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