Green’s Dictionary of Slang

(W.I. Rasta) a sloppy, dirty person, e.g. a vagrant, a good-for-nothing.

1943		in Cassidy & LePage Dict. Jam. Eng. (1980) 77/1: Boobo-yagga, old clothes bundle; used as an abuse to those who delight in wearing old clothes.
1950		Bennett, Clarke & Wilson Anancy Stories and Dialect Verse 99: boogooyagga – unkempt, untidy person.
1960–82		L. Bennett Auntie Roachy Sey (2003) 2: An when we seh smaddy ‘boogoo-yagga’, everbody know seh dat him outa-order.
1991		L.E. Adams Jam. Patois 47: Ku ya! Hoh yu fayva buguyaga to ras! – Look here! You look like a damn tramp!
1995		Francis-Jackson Official Dancehall Dict. 5: Boogu-yagga (Ja.) 1. an unattractive person.
2000		Z. Smith White Teeth 321: Surely a Witness lady don’ wan’ look like a, well, a buguyaga in de house of de Lord.