Green’s Dictionary of Slang

(W.I./Rasta) an obese person.

1943		in Cassidy & LePage Dict. Jam. Eng. (1980) 76/2: Buffoo-buffo, big and clumsy [...] Buffo-buffo, very big [...] Bufu-bufu , short, squat, Buffu-buffu, big, but of no value.
1976		L. Barrett Sun and the Drum 20: A very obese person is amusingly referred to as buffu-buffu which is a corruption of the Twi word bofoo meaning clumsy, swollen, fat, and fleshy.
1980		Cassidy & LePage Dict. Jam. Eng. (2nd edn) 76/2: bufu-bufu [...] Very big, clumsy, stupid, worthless.