From the word proper.

Pra-Pra can be used to address anything of top quality, appearance and presentation.
Synonyms include: Bling Bling, dapper, perfect, Top-notch.
The slang is of Nigerian origin and was popularized by Shaku-Shaku music/culture.
You’re Looking very pra-pra, Hannah’s boyfriend is always looking pra-pra, OSHA pra-pra!
by Hector01 May 15, 2018
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