Green’s Dictionary of Slang

caked adj.2

[? fig. use of cack v.1 (1)]

(US campus) drunk.

[US]Eble Campus Sl. Mar.
[US]Eble Sl. and Sociability 127: Slang terms for drunkenness from just the two school years 1990–92 show great linguistic energy: [...] caked, choked, crocked.