Green’s Dictionary of Slang

buddha adj.

[buddha n.; ult. the Buddha, fl. 5C BC]

(US campus) excellent, worthy of admiration.

[US]Eble Campus Sl. Apr.
[US]Eble Sl. and Sociability 56: The following functionally synonymous slang terms from two school years, 1990–91 and 1991–92, all mean ‘excellent, worthy of approval’: awesome, bad, bitching, booming, brilliant, buddha.