Green’s Dictionary of Slang

pyaka adj.

[Carib.E. pyaka-pyaka, messy, dirty; ult. unknown Afr. language’s poto-poto, muddy]

(W.I. Rasta) tricky or dishonest.

[[UK]T. White Catch a Fire 220: He cut another song [...] ‘Pyaka,’ street slang for ‘muddy ground’].
‘Patois Dict.’ www.dancehallareaz.com 🌐.